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Grade: 11

                        

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.

3 years ago

Answers : (1)

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137 Points
							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
						
3 years ago
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