$^{15}C_3 + ^{15}C_5 + \ldots + ^{15}C_{15} = ?$

  • A
    $2^{14}$
  • B
    $2^{14} - 15$
  • C
    $2^{14} + 15$
  • D
    $2^{14} - 1$

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$\binom{10}{1} + \binom{10}{2} + \binom{11}{3} + \binom{12}{4} + \binom{13}{5} = \dots$

ધારો કે $m, n \in \mathbb{N}$ અને $\operatorname{gcd}(2, n)=1$. જો $30\binom{30}{0} + 29\binom{30}{1} + \ldots + 2\binom{30}{28} + 1\binom{30}{29} = n \cdot 2^m$ હોય,તો $n + m$ ની કિંમત શોધો. (અહીં $\binom{n}{k} = {^nC_k}$)

જો $n$ એ ધન પૂર્ણાંક હોય, તો $(2n+1) ^nC_0 + (2n-1) ^nC_1 + (2n-3) ^nC_2 + \ldots + 1 \cdot ^nC_n$ ની કિંમત શું થાય?

જો $(1+x)^n = a_0 + a_1 x + a_2 x^2 + \ldots + a_n x^n$ અને $a_0 - a_2 + a_4 - a_6 + \ldots = k \cos \frac{n \pi}{4}$ હોય,તો $k = $

જો $^{2017}C_0 + ^{2017}C_1 + ^{2017}C_2 + ...... + ^{2017}C_{1008} = \lambda^2$ જ્યાં $\lambda > 0$ હોય,તો $\lambda$ ને $33$ વડે ભાગતા મળતી શેષ શોધો:

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