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The coefficient of x^r in the expandion of (1+3x+6x^2+10x^3...)^2 is

The coefficient of x^r in the expandion of (1+3x+6x^2+10x^3...)^2 is

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
6 years ago
to find tnuse method of difference562-2489_Capture.PNG

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