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2009 Coaches Practice Questions

- Indiana Association of Principals
- MATH Bowl

Note to Coaches

- These questions were written by the contest

question writers. We write 150 of the number

needed then remove those that are too complex

for 60 seconds or less, just plain extra, or too

similar to others. They provide excellent

resources to direct study. We hope they provide

you insight into the questions saved for the

contests. - The .pdf (Adobe Reader) document includes 6

slides per page, so questions are on the left,

answers on the right. By folding pages

vertically, you can print a question set without

answers and save the full sheets as resources. - You may also download the PowerPoint file from

the M.A.T.H. Bowl page which could be viewed on a

computer monitor or projected to to a larger

screen similar to a contest setting. Even better,

use those PowerPoint slides as templates and

create similar questions by inserting duplicate

slides and then changing the parameters and

answers. - Do you suspect a wrong answer got by the

screening process? Email buckinghamd_at_nlcs.k12.in.u

s for another look and/or explanation.

2009 MATH Number 1 Coaches Practice

It is time for the turkeys to get weighed. If 1

pound 16 ounces, what is the weight of a 430

ounce turkey rounded to the nearest pound?

- 24 pounds
- B. 25 pounds
- C. 26 pounds
- D. 27 pounds

2009 MATH Number 1 Coaches Practice

It is time for the turkeys to get weighed. If 1

pound 16 ounces, what is the weight of a 430

ounce turkey rounded to the nearest pound?

D. 27 pounds

2009 MATH Number 2 Coaches Practice

Scissors are stored in boxes that hold a dozen

pairs each. There are more than enough scissors

to fill 2 boxes, but not enough for 3. What are

the fewest and greatest possible numbers of

scissors?

- 25, 35
- B. 26, 36
- C. 25, 40
- D. 30, 40

2009 MATH Number 2 Coaches Practice

Scissors are stored in boxes that hold a dozen

pairs each. There are more than enough scissors

to fill 2 boxes, but not enough for 3. What are

the fewest and greatest possible numbers of

scissors?

- 25, 35

Solve the equation 4x 320

2009 MATH Number 3 Coaches Practice

- x 316
- x 8
- x 80
- x 90

Solve the equation 4x 320

2009 MATH Number 3 Coaches Practice

- C. x 80

2009 MATH Number 4 Coaches Practice

In the example, which of the following would be

true if the 750 was changed to 75 and the 4

changed to 400?

750 x4

A. answer would be 10 times as large B. answer

would be 100 times as large C. answer would be

10 times smaller D. answer would not change

2009 MATH Number 4 Coaches Practice

In the example, which of the following would be

true if the 750 was changed to 75 and the 4

changed to 400?

750 x4

A. answer would be 10 times as large

2009 MATH Number 5 Coaches Practice

The scale of a map is ¾ of an inch 10 miles. If

the distance on the map between the two towns is

12 inches, what is the actual distance?

A. 90 miles B. 120 miles C. 150 miles D. 160

miles

2009 MATH Number 5 Coaches Practice

The scale of a map is ¾ of an inch 10 miles. If

the distance on the map between the two towns is

12 inches, what is the actual distance?

D. 160 miles

2009 MATH Number 6 Coaches Practice

Pam took two flights to get from Omaha to Dallas.

She arrived in Dallas at 700 P.M. The flight

from Kansas City to Dallas was 5 hours long. She

had an extra two hours at the Kansas City

airport. If the flight from Omaha to Kansas City

is 1 hour long, what time did she leave Omaha?

A.900 A.M. B.1000 A.M. C.1100 A.M.

D.1200 A.M.

2009 MATH Number 6 Coaches Practice

Pam took two flights to get from Omaha to Dallas.

She arrived in Dallas at 700 P.M. The flight

from Kansas City to Dallas was 5 hours long. She

had an extra two hours at the Kansas City

airport. If the flight from Omaha to Kansas City

is 1 hour long, what time did she leave Omaha?

C.1100 A.M.

7/20 ____

2009 MATH Number 7 Coaches Practice

- 0.35
- 3.5
- 35.0
- 350.0

7/20 ____

2009 MATH Number 7 Coaches Practice

- C. 35.0

2009 MATH Number 8 Coaches Practice

To change from Celsius to Fahrenheit Multiply

the Celsius reading by 1.8. Then add 32 to the

product. Round to the nearest whole number if

needed. Place these temperatures in order from

coldest to warmest. 25OC, 20OC, 69O F,

79OF

A. 25OC, 20OC, 69OF, 79OF B. 20OC, 25OC,

69OF, 79OF C. 20OC, 69OF, 25OC, 79OF D.

69OF, 20OC, 79OF, 25OC

2009 MATH Number 8 Coaches Practice

To change from Celsius to Fahrenheit Multiply

the Celsius reading by 1.8. Then add 32 to the

product. Round to the nearest whole number if

needed. Place these temperatures in order from

coldest to warmest. 25O C, 20O C, 69O F, 79O F

C. 20OC, 69OF, 25OC, 79OF

2009 MATH Number 9 Coaches Practice

How many 3s must be multiplied together for the

product to be a number between 200 and 300?

A. 50 B. 6 C. 5 D. 4

2009 MATH Number 9 Coaches Practice

How many 3s must be multiplied together for the

product to be a number between 200 and 300?

C. 5, 34 81 and 35 243

2009 MATH Number 10 Coaches Practice

Which number can be written as the product using

three even numbers?

A. 166 B. 168 C. 170 D. 172

2009 MATH Number 10 Coaches Practice

Which number can be written as the product using

three even numbers?

B. 168 2 2 42

2009 MATH Number 11 Coaches Practice

Which ordered pairs are not solutions to the

equation y 2x - 2

A. (0,-2) B. (1,0) C. (2,3) D. (3,4)

2009 MATH Number 11 Coaches Practice

Which ordered pairs are not solutions to the

equation y 2x - 2

C. (2,3) 3 ? 2(2) - 2

2009 MATH Number 12 Coaches Practice

The price for 5 pounds of oranges is 3.50. There

are 4 oranges to a pound. How much would a dozen

oranges cost?

A. 1.90 B. 2.00 C. 2.10 D. 2.80

2009 MATH Number 12 Coaches Practice

The price for 5 pounds of oranges is 3.50. There

are 4 oranges to a pound. How much would a dozen

oranges cost?

C. 2.10, 3 pounds per dozen, 0.70/pound

2009 MATH Number 13 Coaches Practice

Find the missing number 20 X

32 24

A. 15 B. 16 C. 17 D. 18

2009 MATH Number 13 Coaches Practice

Find the missing number 20 X

32 24

- 15 Using cross products,
- solve 32X 20(24)
- Or 20/32 reduces to 5/8, so (53)/(83) gives

15/24.

2009 MATH Number 14 Coaches Practice

4 x 4 x 4 x 4 x 4

A. 54 B. 4 x 5 C. 44 D. 210

2009 MATH Number 14 Coaches Practice

4 x 4 x 4 x 4 x 4

D. 210 Write each 4 as 2 x 2.

Sam drops his Math book on his desk, and it falls

open. He notices that when he adds the page

numbers, he gets 169. If he multiplies the page

numbers, he gets 7,140. What are the two page

numbers?

2009 MATH Number 15 Coaches Practice

- 60 119
- 84 85
- 82 83
- 85 86

Sam drops his Math book on his desk, and it falls

open. He notices that when he adds the page

numbers, he gets 169. If he multiplies the page

numbers, he gets 7,140. What are the two page

numbers?

2009 MATH Number 15 Coaches Practice

- B. 84 85

Last year, Indiana sales tax rose 1 from 6 to

7. A CD costs 12.99 before tax. How much more

do you have to pay as a result of the tax

increase? Round your answer to the nearest cent.

2009 MATH Number 16 Coaches Practice

- 0.13
- 0.78
- 0.91
- 1.30

Last year, Indiana sales tax rose 1 from 6 to

7. A CD costs 12.99 before tax. How much more

do you have to pay as a result of the tax

increase? Round your answer to the nearest cent.

2009 MATH Number 16 Coaches Practice

- 0.13
- 1 of 12.99 is 0.01 12.99 or 0.1299

2009 MATH Number 17 Coaches Practice

If a chicken lays one egg in one minute, how many

minutes does it take 12 chickens to lay a total

of a dozen eggs?

A. 1/12 minute B. 1 minute C. 12 minutes D.

144 minutes

2009 MATH Number 17 Coaches Practice

If a chicken lays one egg in one minute, how many

minutes does it take 12 chickens to lay a total

of a dozen eggs?

- 1 minute
- All 12 chickens lay their eggs during the same

minute!

Over Spring Break at Prairie Elementary School,

all its teachers took a vacation. 8 teachers

visited the mountains, 13 teachers visited the

ocean. 3 went to both locations. How many

teachers work at Prairie Elementary School?

2009 MATH Number 18 Coaches Practice

- 8 teachers
- 18 teachers
- 21 teachers
- 24 teachers

Over Spring Break at Prairie Elementary School,

all its teachers took a vacation. 8 teachers

visited the mountains, 13 teachers visited the

ocean. 3 went to both locations. How many

teachers work at Prairie Elementary School?

2009 MATH Number 18 Coaches Practice

- B. 18 teachers

Both 3

2009 MATH Number 19 Coaches Practice

Which expression represents the prime

factorization of 180?

- 22 x 9 x 5
- 32 x 4 x 5
- 5 x 62
- 22 x 32 x 5

2009 MATH Number 19 Coaches Practice

Which expression represents the prime

factorization of 180?

- D. 22 x 32 x 5

2009 MATH Number 20 Coaches Practice

Three different factors of 48 added together

equal 33. What are they?

A. 2, 24,7 B. 1,12,16 C. 2,12,24 D. 3,6,24

2009 MATH Number 20 Coaches Practice

Three different factors of 48 added together

equal 33. What are they?

D. 3,6,24

2009 MATH Number 21 Coaches Practice

Roxanne found 34 new pads of paper, each with the

same number of sheets. Which of the following

could NOT be the total number of sheets?

A. 1,190 B. 1,700 C. 2,720 D. 2,520

2009 MATH Number 21 Coaches Practice

Roxanne found 34 new pads of paper, each with the

same number of sheets. Which of the following

could NOT be the total number of sheets?

D. 2,520

2009 MATH Number 22 Coaches Practice

The annual pie eating contest was today! Which

group ate the most pie and how much more did they

eat?

Group 1 Lucy 1/4 Laura 6/8 Lacey

1/2 Laken 2/3 Linda 5/6

Group 2 Clayton 2/3 Dalton 5/8 Taylor 1/6 Travis

3/4 Trista 1/2

A.Group 1 ate 0.25 more pie. B.Group 2 ate 0.25

more pie. C.Group 1 ate 0.28 more pie. D.Group

2 ate 0.28 more pie.

2009 MATH Number 22 Coaches Practice

The annual pie eating contest was today! Which

group ate the most pie and how much more did they

eat?

Group 1 Lucy 1/4 Laura 6/8 Lacey

1/2 Laken 2/3 Linda 5/6

Group 2 Clayton 2/3 Dalton 5/8 Taylor 1/6 Travis

3/4 Trista 1/2

C. Group 1 ate 0.28 more pie.

2009 MATH Number 23 Coaches Practice

After 5 tests, a students average was 80. After

taking another test which counted as two test

grades, his average dropped to 76. What was his

grade on that test?

A. 52 B. 66 C. 72 D. 76

2009 MATH Number 23 Coaches Practice

After 5 tests, a students average was 80. After

taking another test which counted as two test

grades, his average dropped to 76. What was his

grade on that test?

- 66 because
- 767 532
- 532 - 580 132
- 132 / 2 66

Jo has planted 3/8 of the seeds for her flower

garden. When she plants 3 more seeds, shell be

½ done. When finished, how many total seeds will

Jo have planted in her garden?

2009 MATH Number 24 Coaches Practice

- 6 seeds
- 12 seeds
- 24 seeds
- 36 seeds

Jo has planted 3/8 of the seeds for her flower

garden. When she plants 3 more seeds, shell be

½ done. When finished, how many total seeds will

Jo have planted in her garden?

2009 MATH Number 24 Coaches Practice

- C. 24 seeds
- 1/2 - 3/8 1/8 of garden.
- Since 3 seeds is 1/8, the whole garden must have

24 seeds.

There are 345 people in line for a roller coaster

ride. One train can hold 25 people. How many

trains are needed in order for all people in line

to enjoy the ride once?

2009 MATH Number 25 Coaches Practice

- 13 trains
- 14 trains
- 15 trains
- 345 trains

There are 345 people in line for a roller coaster

ride. One train can hold 25 people. How many

trains are needed in order for all people in line

to enjoy the ride once?

2009 MATH Number 25 Coaches Practice

- B. 14 trains

2009 MATH Number 26 Coaches Practice

Which is two to the sixth power written in

standard form?

A. 26 B. 6 6 C. 64 D. 2 2 2 2 2 2

2009 MATH Number 26 Coaches Practice

Which is two to the sixth power written in

standard form?

C. 64

2009 MATH Number 27 Coaches Practice

Find the next two Fibonacci terms 1, 1, 2, 3, 5,

8, 13, 21, 34, 55,

A. 76, 126 B. 76, 144 C. 89, 144 D. not given

2009 MATH Number 27 Coaches Practice

Find the next two Fibonacci terms 1, 1, 2, 3, 5,

8, 13, 21, 34, 55,

- 89, 144
- The next term is the sum of the two previous

terms.

2009 MATH Number 28 Coaches Practice

33 1/3 of 90 is?

A. 18 B. 27 C. 30 D. 45

2009 MATH Number 28 Coaches Practice

33 1/3 of 90 is?

C. 30

2009 MATH Number 29 Coaches Practice

Finish the pattern 9, 8 1/3, 10 1/6, 9 1/2, 11

1/3, _____, _____

- 12, 12 1/2
- B. 10 2/3, 12 1/2
- C. 10 2/3, 12
- D. 10 1/3, 12 1/2

2009 MATH Number 29 Coaches Practice

Finish the pattern 9, 8 1/3, 10 1/6, 9 1/2, 11

1/3, _____, _____

B. 10 2/3, 12 1/2 Alternate adding -2/3 and

then 1 5/6.

2009 MATH Number 30 Coaches Practice

Multiply (2x 1) (5x 3) by the FOIL method.

A. 1113 B. 10x2 11x 3 C. 10x2 13x 3 D.

130

2009 MATH Number 30 Coaches Practice

Multiply (2x 1) (5 3) by the FOIL method.

B. 10x2 11x 3

2009 MATH Number 31 Coaches Practice

Which of the following numbers is not a prime

number?

A. 43 B. 53 C. 63 D. 73

2009 MATH Number 31 Coaches Practice

Which of the following numbers is not a prime

number?

C. 63

2009 MATH Number 32 Coaches Practice

- Solve by the following clues
- A mixed number.
- Each term is a different prime number.
- The Sum of the fractions terms equals the whole

number. - Between 10 and 15.

A. 13 2/11 B. 11 2/9 C. 12 3/9 D. 14 4/10

2009 MATH Number 32 Coaches Practice

- Solve by the following clues
- A mixed number.
- Each term is a different prime number.
- The Sum of the fractions terms equals the whole

number. - Between 10 and 15.

A. 13 2/11

2009 MATH Number 33 Coaches Practice

On the planet Strange-o, there are 3 days in a

week, 8 weeks in a month, and 4 months in a year.

How many days are in a Strange-o year?

Strange-o

A. 24 days B. 32 days C. 64 days D. 96 days

2009 MATH Number 33 Coaches Practice

On the planet Strange-o, there are 3 days in a

week, 8 weeks in a month, and 4 months in a year.

How many days are in a Strange-o year?

Strange-o

D. 96 days

2009 MATH Number 34 Coaches Practice

In the following pattern, what is the incorrect

term and what should it be replaced with? 1/2,

0.5, 2/3, 1.0, 3/4, 1.5,4/5, 2.0, 5/4, 2.5, 6/7,

3.0,

A. 5/4 should be replaced with 5/6 B. 4/5

should be replaced with 2/3 C. 6/7 should be

replaced with 3/2 D. 2/3 should be replaced with

5/6

2009 MATH Number 34 Coaches Practice

In the following pattern, what is the incorrect

term and what should it be replaced with? 1/2,

0.5, 2/3, 1.0, 3/4, 1.5,4/5, 2.0, 5/4, 2.5, 6/7,

3.0,

A. 5/4 should be replaced with 5/6

2009 MATH Number 35 Coaches Practice

If a hunting dog can catch 3 rabbits in a week,

how many rabbits should it catch in a month?

A. 3 rabbits B. 4 rabbits C. 10 rabbits D. 12

rabbits

2009 MATH Number 35 Coaches Practice

If a hunting dog can catch 3 rabbits in a week,

how many rabbits should it catch in a month?

D. 12 rabbits

2009 MATH Number 36 Coaches Practice

Find the number of seconds in 2 ¾ hours.

A. 7200 seconds B. 4800 seconds C. 9900 seconds

D. 1000 seconds

2009 MATH Number 36 Coaches Practice

Find the number of seconds in 2 ¾ hours.

C. 9900 seconds

2009 MATH Number 37 Coaches Practice

Twenty electrical poles are placed in a straight

line. The distance between any two consecutive

poles is 10 feet. What is the distance between

the 1st and 10th pole?

A. 90 ft. B. 100 ft. C. 110 ft. D. 120 ft.

2009 MATH Number 37 Coaches Practice

Twenty electrical poles are placed in a straight

line. The distance between any two consecutive

poles is 10 feet. What is the distance between

the 1st and 10th pole?

A. 90 ft.

2009 MATH Number 38 Coaches Practice

If 5 of a certain number is 16, then 25 of

half the number is?

A. 2 B. 4 C. 40 D. 80

2009 MATH Number 38 Coaches Practice

If 5 of a certain number is 16, then 25 of

half the number is?

C. 40

2009 MATH Number 39 Coaches Practice

Underdog saved 98 dogs from cruel treatment in

Sum City. He saved 72 dogs from harm in

Quotientville. What was the average in the two

cities?

A. 72 B. 80 C. 84 D. 85

2009 MATH Number 39 Coaches Practice

Underdog saved 98 dogs from cruel treatment in

Sum City. He saved 72 dogs from harm in

Quotientville. What was the average in the two

cities?

D. 85

2009 MATH Number 40 Coaches Practice

A clock that loses 1 minute every 6 hours was

correctly set at 600 a.m. on April 1st. What

time would that clock show when the correct time

was 1200 noon on April 6th of the same year?

A. 1136 a.m. B. 1138 a.m. C. 1139 a.m. D.

1140 a.m.

2009 MATH Number 40 Coaches Practice

A clock that loses 1 minute every 6 hours was

correctly set at 600 a.m. on April 1st. What was

the time shown on this clock when the correct

time was 1200 noon on April 6th of the same year?

C. 1139 a.m.

If J S 18, S O 12 and O ? 8, then

J ? ?

2009 MATH Number 41 Coaches Practice

- 4
- 6
- 14
- 20

If J S 18, S O 12 and O ? 8, then

J ? ?

2009 MATH Number 41 Coaches Practice

- C. 14

2009 MATH Number 42 Coaches Practice

Find the next 3 terms in the series of numbers

below 31, 37, 41, 43, 47,

A. 50, 53, 57 B. 61, 67, 77 C. 53, 60, 63 D.

53, 59, 61

2009 MATH Number 42 Coaches Practice

Find the next 3 terms in the series of numbers

below 31, 37, 41, 43, 47,

D. 53, 59, 61 because they are primes

2009 MATH Number 43 Coaches Practice

If Princess Victoria has one gold and one silver

crown, one purple and one red robe, one pair of

brown shoes, and one pair of black shoes, how

many different combinations of clothing and

accessories will she have?

A. 5 combinations B. 6 combinations C. 7

combinations D. 8 combinations

2009 MATH Number 43 Coaches Practice

If Princess Victoria has one gold and one silver

crown, one purple and one red robe, one pair of

brown shoes, and one pair of black shoes, how

many different combinations of clothing and

accessories will she have?

D. 8 combinations

2009 MATH Number 44 Coaches Practice

Moms Favorite Pumpkin Pie

Makes 3 pies 3 ½ c. sugar 4

¾ c. milk 1 1/8 c. egg yolks 1 3/8 c. egg

whites 1 1/3 c. pumpkin 2 3/8 teaspoon cream

tartar 3 pie shells 1 ¾ c. butter

For Moms birthday, we are having a surprise

party for her. We will need 75 pies. How much

butter and milk will be needed?

- A. 43 ¾ cups butter 118 ¾ cups milk
- 42 ½ cups butter 117 ¾ cups milk
- 131 ¼ cups butter 356 ½ cups milk
- D. 135 cups butter 357 cups milk

2009 MATH Number 44 Coaches Practice

Moms Favorite Pumpkin Pie

Makes 3 pies 3 ½ c. sugar

4 ¾ c. milk 1 1/8 c. egg yolks 1 3/8 c. egg

whites 1 1/3 c. pumpkin 2 3/8 teaspoon cream

tartar 3 pie shells 1 ¾ c. butter

For Moms birthday, we are having a surprise

party for her. We will need 75 pies. How much

butter and milk will be needed?

A. 43 ¾ cups butter 118 ¾ cups milk

2009 Math Number 45 Coaches Practice

What is the mean temperature of the week?

A. 79o F B. 82o F C. 86o F D. 96o F

2009 Math Number 45 Coaches Practice

What is the mean temperature of the week?

C. 86o F

2009 MATH Number 46 Coaches Practice

In what month was there the greatest difference

in the number of members for the two tree houses?

- August
- September
- December
- January

2009 MATH Number 46 Coaches Practice

In what month was there the greatest difference

in the number of members for the two tree houses?

- D. January

2009 MATH Number 47 Coaches Practice

A regular 8 x 8 checker board has 32 black and 32

red squares. Tom colors ½ of the black squares

red. Then, Cindy colors ¼ of all the red squares

black. How many black squares are on the

checkerboard now?

A. 20 B. 24 C. 28 D. not given

2009 MATH Number 47 Coaches Practice

A regular 8 x 8 checker board has 32 black and 32

red squares. Tom colors ½ of the black squares

red. Then, Cindy colors ¼ of all the red squares

black. How many black squares are on the

checkerboard now?

C. 28

2009 MATH Number 48 Coaches Practice

At Jordans birthday party, there were 1/3 more

girls than boys. After 6 girls went home, there

was an equal amount of boys and girls. How many

girls were there at the beginning of the party?

A. 12 girls B. 16 girls C. 18 girls D. 24

girls

2009 MATH Number 48 Coaches Practice

At Jordans birthday party, there were 1/3 more

girls than boys. After 6 girls went home, there

was an equal amount of boys and girls. How many

girls were there at the beginning of the party?

D. 24 girls

2009 MATH Number 49 Coaches Practice

Given the information to the left about test

scores, which statement below is false?

A. 22 students took the test. B. 2 students

received a 92. C. There were no scores given

below 50. D. The test average is 70.

2009 MATH Number 49 Coaches Practice

Given the information to the left about test

scores, which statement below is false?

D. The test average is 70.

2009 MATH Number 50 Coaches Practice

Tournament Time

Its tournament time. Here is the schedule of

events. The stop time of each event is the start

time of the next event and so on. What time will

the games begin after the intermission?

A.1253 B. 145 C. 237 D. 253

2009 MATH Number 50 Coaches Practice

Tournament Time

Its tournament time. Here is the schedule of

events. The stop time of each event is the start

time of the next event and so on. What time will

the games begin after the intermission?

D. 253

2009 MATH Number 51 Coaches Practice

Green Blue Orange

Shirleys Surf Shop

Pink Red Yellow

Pete and Repeat want to rent surfboards. How

many combinations of colors are possible? They

may rent the same color.

A.18 B. 19 C. 20 D. 21

2009 MATH Number 51 Coaches Practice

Green Blue Orange

Shirleys Surf Shop

Pink Red Yellow

Pete and Repeat want to rent surfboards. How

many combinations of colors are possible? They

may rent the same color.

D. 21

2009 MATH Number 52 Coaches Practice

Given the data . 34, 34, 35, 37, 38, 39, 40

What is the median, mode, and mean?

A. 34, 40, 37 B. 35, 37, 40 C. 34, 37, 34 D.

37, 34, 37

2009 MATH Number 52 Coaches Practice

Given the data . 34, 34, 35, 37, 38, 39, 40

What is the median, mode, and mean?

D. 37, 34, 37

2009 MATH Number 51 Coaches Practice

At the end of the Twelve days of Christmas, how

many gifts will be received?

HINT Maybe Mr. Blaise Pascal was onto something!

- 12 gifts
- 24 gifts
- 286 gifts
- 364 gifts

2009 MATH Number 51 Coaches Practice

At the end of the Twelve days of Christmas, how

many gifts will be received?

D. 364 gifts

DAY new gifts Total gifts 1 1

1 2 3 4 3 6 10 4 10 20

5 15 35 6 21 56 7 28 84

8 36 120 9 45 165 10 55 220

11 66 286 12 78 364