If the coefficients of rth and (r + 2)th term in the expansion of (1 + x)n are equal, th….

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If the coefficients of r^th and (r + 2)^th term in the expansion of (1 + x)ⁿ are equal, then r is equal to

Options :-

1. 2n
2. 
3. n/2
4. 

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