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the coefficent of x^5 in the expansion of (1+x)^21+(1+x)^22+--------+(1+x)^30

the coefficent of x^5 in the expansion of (1+x)^21+(1+x)^22+--------+(1+x)^30

Grade:12

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4407 Points
4 years ago
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