Permutations and Combinations

Question 1

How many permutations are possible for 11 objects taken 7 at a time?

Revolt · Accepted Answer

1,663,200

Question 2

What is ?

Revolt · Accepted Answer

360

Question 3

A choir has 3 spots open for altos, and 8 altos are interested in them. In how many ways can the open spots be filled?

Revolt · Accepted Answer

56

Question 4

A raffle is being held to raise money for wildlife conservation efforts. Ten different gift cards are being awarded. If 3,125 people each bought a single raffle ticket, which of the following expressions represents the number of ways the gift cards can be awarded? Assume that each person can win only once.

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/evresources/3111-14-50/mc024-4.jpg

Question 5

What is ?

Revolt · Accepted Answer

35

Question 6

A trial jury of 6 people will be chosen from among 18 candidates. How many juries are possible?

Revolt · Accepted Answer

18,564

Question 7

Of the 10 contestants in a televised quiz competition, 2 were eliminated during this week’s show, and 2 more will be eliminated during next week’s show. How many groups of 6 remaining contestants are possible a week from now? Assume that the show airs on the same day every week.

Revolt · Accepted Answer

28

Question 8

Which statement is true?

Revolt · Accepted Answer

You can use permutations when order matters and use combinations when order doesn’t matter.

Question 9

Which expression represents the number of possible permutations of n items taken r at a time?

Revolt · Accepted Answer

mc001-2.jpg

Question 10

Which expression represents ?

Revolt · Accepted Answer

mc006-2.jpg

Permutations and Combinations Answers

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