Decide if this is a combination or permutation and then answer the question.

Minnie has 4 different stamps. She needs 3 to mail a large letter. How many ways can she pick the 3 that will be used?

Question

Decide if this is a combination or permutation and then answer the question.

Minnie has 4 different stamps. She needs 3 to mail a large letter. How many ways can she pick the 3 that will be used?

anonymous · Answer

The answer options are:
combination
permutation
4
2
24
12
There is more than one answer

campbell_st · Answer

well the restriction is that once a stamp is used it can't be reused... 

so the arrangements are 

|dw:1434657753061:dw|

campbell_st · Answer

so which has no replacement   permutations or combinations..?

anonymous · Answer

Combinations??

campbell_st · Answer

close... but not correct...

anonymous · Answer

Permutations?