Question

Let's say you had a population of 7 people, and you wanted to sample 2 and you put their

names in a hat. Their names are:
John
Jack
Qiu
Tina
Hatty
Jacques
Des
If you sample with replacement, how many combinations can you get?
If you sample without replacement, how many combinations can you get?

Answer 1

49

42

Explanation:

With replacement: 7 × 7 = 49

Without replacement: 7 × 6 = 42