$\frac{C_1}{C_0} + 2 \cdot \frac{C_2}{C_1} + 3 \cdot \frac{C_3}{C_2} + \dots + n \cdot \frac{C_n}{C_{n-1}}$ નું મૂલ્ય શું થાય?

  • A
    $\frac{n(n - 1)}{2}$
  • B
    $\frac{(n - 1)(n + 1)}{2}$
  • C
    $\frac{n(n + 1)}{2}$
  • D
    $\frac{n^2 + n}{4}$

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Similar Questions

જો $1^2 \cdot ^{20}C_1 + 2^2 \cdot ^{20}C_2 + 3^2 \cdot ^{20}C_3 + \dots + 20^2 \cdot ^{20}C_{20} = A(2^\beta)$ હોય,તો ક્રમયુક્ત જોડ $(A, \beta)$ ની કિંમત શોધો.

ધારો કે $Q(x)$ એ $n$ ઘાતવાળી બહુપદી છે. જો $Q(1)=1$ અને $\frac{Q(2x)}{Q(x+1)}+\frac{56}{x+7}-8=0$ હોય,તો ${}^nC_0+{}^nC_1+\ldots+{}^nC_n$ ની કિંમત કેટલી થાય?

$\frac{1}{1!(n - 1)!} + \frac{1}{3!(n - 3)!} + \frac{1}{5!(n - 5)!} + \dots = $

જો $n \in N$ માટે $(1+x)^n = C_0 + C_1 x + C_2 x^2 + \ldots + C_n x^n$ હોય,તો $C_0 + \frac{C_1}{2} + \frac{C_2}{3} + \ldots + \frac{C_n}{n+1} =$

$0, 1, 2, \dots, n$ કિંમતોનો મધ્યક,જેના અનુરૂપ ભાર (weights) અનુક્રમે $^nC_0, ^nC_1, ^nC_2, \dots, ^nC_n$ છે,તે શોધો.

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