Evaluate the expression.
-${ } _ { 11 } \mathrm { C } _ { 7 }$
A) 330
B) 7920
C) $1,663,200$
D) $\frac { 11 } { 28 }$

Name: Evaluate the expression. -${ } _ { 11 } \mathrm { C } _ { 7 }$ A) 330 B) 7920 C) $1,663,200$ D) $\frac { 11 } { 28 }$
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Question

Quizplus · Accepted Answer

${ } _ { 11 } \mathrm { C } _ { 7 }$ calculates the number of combinations of 11 items taken 7 at a time. It equals $\frac{11!}{7!(11-7)!} = \frac{11!}{7!4!} = \frac{11 \times 10 \times 9 \times 8}{4 \times 3 \times 2 \times 1} = 330$.

Evaluate the Expression 11C7{ } _ { 11 } \mathrm { C } _ { 7 }11​C7​

Evaluate the Expression ${ } _ { 11 } \mathrm { C } _ { 7 }$