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mash [69]
3 years ago
11

Simplify the expression. 7C3 A. 5,040 B. 210 C. 1 D. 35

Mathematics
2 answers:
vladimir2022 [97]3 years ago
8 0

Answer:

35

Step-by-step explanation:

Simplify the expression. 7C3

the formula for nCr is \frac{n!}{r!(n-r)!}

n=7 and r= 3. Plug in 7 for n and 3 for r in the formula

\frac{7!}{3!(7-3)!}

\frac{7*6*5*4*3*2*1}{(3*2*1)(4*3*2*1)}

Cancel out 4*3*2*1 at the top and bottom

\frac{7*6*5*4*3*2*1}{(3*2*1)}

Cancel out 6 at the top and bottom

35

kherson [118]3 years ago
4 0
7 choose 3 is going to be 35
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