The value of 9C4 is 126
The value of 9 combination 4 can be obtained using the combination formula :
Recall :
nCr = n! ÷ (n-r)!r!
Therefore;
9C4 = 9! ÷ (9-4)!4!
9C4 = 9! ÷ 5!4!
9C4 = (9×8×7×6) ÷ (4×3×2×1) = 3024 ÷ 24 = 126
9C4 = 126
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