The possible number of combinations of 3 out of 8 distinct items equals:
A) 28
B) 56
C) 112
D) 224
E) 24

Name: The possible number of combinations of 3 out of 8 distinct items equals: A) 28 B) 56 C) 112 D) 224 E) 24
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Question

Quizplus · Accepted Answer

The formula for finding the number of combinations of r items out of n distinct items is nCr = n!/(r!*(n-r)!) where ! denotes factorial. Substituting n=8 and r=3, we get 8C3 = 8!/(3!*(8-3)!) = 56. Therefore, the possible number of combinations of 3 out of 8 distinct items is 56.

The Possible Number of Combinations of 3 Out of 8