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If C0,C1,C2,.....Cn denote the coefficient in the expansion of (1+x)n, then the value of C1+2C2+3C3....+nCn is |
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Answer» If C0,C1,C2,.....Cn denote the coefficient in the expansion of (1+x)n, then the value of C1+2C2+3C3....+nCn is |
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