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Bidisha Shit posted an Question
December 09, 2020 • 15:12 pm 30 points
  • IIT JAM
  • Mathematics (MA)

Find the coefficient of x80 in the power series (1+x+ x+ x3 + x +.) (x2 +x + x+x+.) (1 + x +x)? (a) 110 (b) 120 (c) 115 (d) 125

Sir please explain this . . . . . . . . . . . ......

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