Binomial TheoremHard

Question

If (¹⁵C_r + ¹⁵C_r-1) (¹⁵C_15-r + ¹⁵C_16-r) = (¹⁶C₁₃)², then the value of r is -

Options

A.r = 3

B.r = 2

C.r = 4

D.None of these

Solution

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