MCQ
${ }^{47} C_4+\sum_{r=1}^5{ }^{52-r} C_3$ बराबर हैं:
  • A
    ${ }^{51} \mathrm{C}_4$
  • ${ }^{52} \mathrm{C}_4$
  • C
    ${ }^{53} \mathrm{C}_4$
  • D
     इनमें से कोई नहीं

Answer

Correct option: B.
${ }^{52} \mathrm{C}_4$
(B) ${ }^{52} \mathrm{C}_4$

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