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Svet_ta [14]
3 years ago
15

Evaluate C(8, 2). 56 28 40,320 20,160

Mathematics
1 answer:
algol133 years ago
3 0

Answer:

option B

28

Step-by-step explanation:

Given in the question,

C(8,2)

Formula to use

<h3> nCr = n! / r! * (n - r)!</h3>

here n = 8

        r  = 2

We have to calculate combinations of 8 object taken 2 at a time, then

C(8,2)  

8C2

8! / 2! * (8 - 2)!

\frac{8*7*6*5*4*3*2*1}{2*1(6!)}

\frac{8*7*6*5*4*3*2*1}{2*1(6*5*4*3*2*1)}

\frac{8*7}2

56/2

28

So, 8C2 = 28

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Step-by-step explanation:

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Answer:

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20 is divisible by 4 and 5.

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