Suppose we have a group of 5 children and wish to randomly select 2 from the group without replacement.How many possible unique samples of size 2 are possible if the order of selection does not matter?
A) 2
B) 5
C) 20
D) 10

Question

Quizplus · Accepted Answer

The number of possible unique samples of size 2 without replacement can be calculated using the combination formula: C(5,2) = 5!/[2!(5-2)!] = 10. Therefore, the answer is D) 10.

Suppose We Have a Group of 5 Children and Wish