Evaluate ${ } _ { n } C _ { r }$ using the formula from this section. ${ } _ { 5 } C _ { 3 }$
A)84
B)60
C)10
D)20
E)35

Name: Evaluate ${ } _ { n } C _ { r }$ using the formula from this section. ${ } _ { 5 } C _ { 3 }$ A)84 B)60 C)10 D)20 E)35
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Question

Evaluate ${ } _ { n } C _ { r }$ using the formula from this section.   ${ } _ { 5 } C _ { 3 }$  
A)84
B)60
C)10
D)20
E)35

Quizplus · Accepted Answer

${ } _ { 5 } C _ { 3 } = \frac{5!}{3!(5-3)!} = \frac{5 \times 4 \times 3!}{3! \times 2!} = \frac{5 \times 4}{2 \times 1} = 10.$

Evaluate nCr{ } _ { n } C _ { r }n​Cr​

Evaluate ${ } _ { n } C _ { r }$