Question

What is the value of C49 ?


36


126


6561


3024

Answer 1

Is there like a chart because I cans understand it it must have a chart or something missing

Answer 2

Using the concept of combination, the value of the expression 9C4 is 126

Recall the combination formula :

• $nCr = \frac{n!} {(n-r)!r!}$

$9C4 = \frac{9!} {(9-4)!4!}$

$9C4 = \frac{9 \times 8 \times 7 \times 6} {4 \times 3 \times 2 \times 1}$

$9C4 = \frac{3024} {24} = 126$

Therefore, the value of the expression 9C4 is 126.

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