COMBINATION AND PERMUTATION

If ₄C_r=4 then r=____.

• 3

• 24

• 4

• 2

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Find n in C(n,2)=15.

• 6

• 5

• 30

• 15

Tags

CCSS.HSA.APR.C.5

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.1

What is ₅C₅?

• 120

• 5

• 1

• 0

Tags

CCSS.HSA.APR.C.5

CCSS.HSS.CP.B.9

Find r in C(10,r)=10.

• 2

• 9

• 14

• 24

Tags

CCSS.HSA.APR.C.5

What is n in _nC₈ = 45?

• 7

• 9

• 10

• 30

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSS.CP.B.9

Find C(5,2).

• 8

• 10

• 20

• 6

Tags

CCSS.HSS.CP.B.9

What is the value of r in C(9,r)=126?

• 5

• 10

• 12

• 24

Tags

CCSS.HSA.APR.C.5

CCSS.HSS.CP.B.9

Selecting 3 vowels in an alphabet.

• Permutation

• Combination

Tags

CCSS.HSS.CP.B.9

Classroom seating arrangement.

• Permutation

• Combination

Tags

CCSS.HSS.CP.B.9

Janna celebrates her 18th birthday. She invited 11 of her closest friends (6 boys and 5 girls). Find the number of arrangements if they are all seated at the round table.

• 5!

• 6!

• 10!

• 11!

Tags

CCSS.HSS.CP.B.9