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Find the coefficient of x^5 in the expansion of (1+x)^6+(1+x)^7+....+(1+x)^15?

Find the coefficient of x^5 in the expansion of (1+x)^6+(1+x)^7+....+(1+x)^15?

Grade:11

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
8 years ago
Use nCr in order to find out the answer you intend to find .Then all the values and you will get the answer

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