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If the coefficient of (r+3)th term in the expansion of (1+x)^47 be the same as the coefficient of (3r+2)th term, find these two terms. Please solve this.

If the coefficient of (r+3)th term in the expansion of (1+x)^47 be the same as the coefficient of (3r+2)th term, find these two terms. Please solve this.

Grade:11

1 Answers

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137 Points
6 years ago
Coefficient of (r+3)th term = 47C(r+2) and coefficient of (3r+2)th term = 47C(3r+1) and after equating both u will get 2 values of r as r=0.5, r=11, therefore 14th term and 35th term have same coefficients

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