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36 votes
36 votes
Evaluate 19C1 PLEASE HELP

User AkiEru
by
2.7k points

2 Answers

21 votes
21 votes

Answer:

Your answer will be 19C1 =19

User Semih
by
2.9k points
24 votes
24 votes

Answer:


{19}C_1=19

Explanation:

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

C stands for combination.

The formula of combination is as follows :


nC_r=(n!)/(r!(n-r)!)

Here,

n = 19 and r = 1

So,


nC_r=(19!)/(1!(19-1)!)\\\\nC_r=(19!)/(1!* 18!)\\\\nC_r=(19* 18!)/(1!* 18!)\\\\nC_r=19

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

User Matt Wolin
by
3.4k points