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$The coefficient of x^{50} in (1 + x)^{41} {(1 - x + x^{2})}^{40} is$

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Correct option is A

Coefficient of x50 in 1+x411−x+x240 = Coefficient of x50 in 1+x1+x340= coefficient of x50 in 1+x1+40C1x3+......+40C16x316+40C17x317+..... =0

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The coefficient of x50in⁡(1+x)411−x+x240 is

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$The coefficient of x^{50} in (1 + x)^{41} {(1 - x + x^{2})}^{40} is$