જો $\sum\limits_{K = 1}^{12} {12K \cdot {^{12}C_K} \cdot {^{11}C_{K - 1}}} $ એ $\frac{{12 \times 21 \times 19 \times 17 \times \dots \times 3}}{{11!}} \times {2^{12}} \times p$ બરાબર હોય,તો $p$ ની કિંમત શોધો.

  • A
    $2$
  • B
    $4$
  • C
    $8$
  • D
    $6$

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જો $(1 + x)^n$ ના વિસ્તરણમાં $5^{th}$,$6^{th}$ અને $7^{th}$ પદોના સહગુણકો $A.P.$ માં હોય,તો $n =$

શ્રેણી $\frac{C_0}{2} - \frac{C_1}{3} + \frac{C_2}{4} - \frac{C_3}{5} + \dots$ ના $(n + 1)$ પદોનો સરવાળો શું થાય?

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જો $(1 - x + x^2)^n = a_0 + a_1x + a_2x^2 + \dots + a_{2n}x^{2n}$ હોય,તો $a_0 + a_2 + a_4 + \dots + a_{2n}$ ની કિંમત શોધો.

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