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ycow [4]
3 years ago
10

Evaluate 19C1 PLEASE HELP

Mathematics
2 answers:
puteri [66]3 years ago
7 0

Answer:

Your answer will be 19C1 =19

LiRa [457]3 years ago
5 0

Answer:

{19}C_1=19

Step-by-step explanation:

We need to find the value of {19}C_1.

C stands for combination.

The formula of combination is as follows :

nC_r=\dfrac{n!}{r!(n-r)!}

Here,

n = 19 and r = 1

So,

nC_r=\dfrac{19!}{1!(19-1)!}\\\\nC_r=\dfrac{19!}{1!\times 18!}\\\\nC_r=\dfrac{19\times 18!}{1!\times 18!}\\\\nC_r=19

So, the value of {19}C_1 is 19.

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