$\frac{C_1}{2} + \frac{C_3}{4} + \frac{C_5}{6} + \dots$ નું મૂલ્ય કેટલું થાય?

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

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Similar Questions

$-{ }^{15}C_{1} + 2 \cdot { }^{15}C_{2} - 3 \cdot { }^{15}C_{3} + \ldots - 15 \cdot { }^{15}C_{15} + { }^{14}C_{1} + { }^{14}C_{3} + { }^{14}C_{5} + \ldots + { }^{14}C_{11}$ ની કિંમત શોધો.

જો ${S_n} = \sum\limits_{r = 0}^n {\frac{1}{{^n{C_r}}}} $ અને ${t_n} = \sum\limits_{r = 0}^n {\frac{r}{{^n{C_r}}}} $ હોય,તો $\frac{{{t_n}}}{{{S_n}}}$ ની કિંમત શું થાય?

જો $(\frac{1}{^{15}C_{0}}+\frac{1}{^{15}C_{1}})(\frac{1}{^{15}C_{1}}+\frac{1}{^{15}C_{2}})...(\frac{1}{^{15}C_{12}}+\frac{1}{^{15}C_{13}}) = \frac{a^{13}}{^{14}C_{0} \cdot ^{14}C_{1} \cdot ... \cdot ^{14}C_{12}}$ હોય, તો $30a$ ની કિંમત શોધો:

$(1+x)^{37}$ ના દ્વિપદી વિસ્તરણમાં છેલ્લા $19$ પદોના સહગુણકોનો સરવાળો કેટલો થાય?

જો $(1+x)^n = \sum_{r=0}^n C_r x^r$ હોય,તો $C_0 + (C_0 + C_1) + (C_0 + C_1 + C_2) + \ldots + (C_0 + C_1 + C_2 + \ldots + C_n)$ ની કિંમત શોધો.

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