Find the sum .nC1+2×.nC2+3×.nC3+……+n×.nCn.

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Find the sum .^{{{n}}}{C}_{{{1}}}+{2}.^{{{n}}}{C}_{{{2}}}+{3}.

Question

Find the sum $.^{n} C_{1} + 2 \times .^{n} C_{2} + 3 \times .^{n} C_{3} + \dots\dots + n \times .^{n} C_{n}$ .

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Find the sum

.^{n} C_{1} + 2 \times .^{n} C_{2} + 3 \times .^{n} C_{3} + \dots\dots + n \times .^{n} C_{n}

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Question Text

Find the sum

.^{n} C_{1} + 2 \times .^{n} C_{2} + 3 \times .^{n} C_{3} + \dots\dots + n \times .^{n} C_{n}