Compute the number of ways you can select n elements from N elements.
-$n = 2 , N = 10$
A) 19
B) 8
C) 45
D) 90

Name: Compute the number of ways you can select n elements from N elements. -$n = 2 , N = 10$ A) 19 B) 8 C) 45 D) 90
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Question

Quizplus · Accepted Answer

The number of ways to select n elements from N elements is given by the combination formula $ \binom{N}{n} = \frac{N!}{n!(N-n)!} $. For $ n = 2 $ and $ N = 10 $, it is $ \binom{10}{2} = \frac{10!}{2!(10-2)!} = \frac{10 \times 9}{2 \times 1} = 45 $.

Compute the Number of Ways You Can Select N Elements n=2,N=10n = 2 , N = 10n=2,N=10

Compute the Number of Ways You Can Select N Elements $n = 2 , N = 10$