Binomial TheoremHard

Question

The value of the expression 47C4 + 52 - jC3 is equal to :

Options

A.47C5
B.52C5
C.52C4
D.49C4

Solution

47C4 + 51C3 + 50C3 + 49C3 + 48C3 + 47C3 = 52C4

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