Evaluate the expression.
-$9 C _ { 5 }$
A) 15120
B) $\frac { 9 } { 20 }$
C) 126
D) 3024

Name: Evaluate the expression. -$9 C _ { 5 }$ A) 15120 B) $\frac { 9 } { 20 }$ C) 126 D) 3024
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Question

Quizplus · Accepted Answer

The expression $9 C _ { 5 }$ represents the number of combinations of 9 items taken 5 at a time. It is calculated using the formula $\frac{9!}{5!(9-5)!}$, which simplifies to $\frac{9!}{5!4!} = \frac{9 \times 8 \times 7 \times 6}{4 \times 3 \times 2 \times 1} = 126$.

Evaluate the Expression 9C59 C _ { 5 }9C5​ A) 15120 B)

Evaluate the Expression $9 C _ { 5 }$ A) 15120
B)