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JEE Mains · Maths · STD 11 - 6. permutation and combination

यदि किसी \(\mathrm{m}, \mathrm{n}\) के लिए; \( { }^6 C_m+2\left({ }^6 C_{m+1}\right)+{ }^6 C_{m+2}>{ }^8 C_3 \) तथा \( { }^{n-1} P_3:{ }^n P_4=1: 8\) है, तो \({ }^n P_{m+1}+{ }^{n+1} C_m\) = ...........

  1. A \(380\)
  2. B \(376\)
  3. C \(384\)
  4. D \(372\)
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Answer & Solution

Correct Answer

(D) \(372\)

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Detailed explanation

\({ }^6 \mathrm{C}_{\mathrm{m}}+2\left({ }^6 \mathrm{C}_{\mathrm{m}+1}\right)+{ }^6 \mathrm{C}_{\mathrm{m}+2}>{ }^8 \mathrm{C}_3\) \({ }^7 \mathrm{C}_{\mathrm{m}+1}+{ }^7 \mathrm{C}_{\mathrm{m}+2}>{ }^8 \mathrm{C}_3\) \({ }^8 \mathrm{C}_{\mathrm{m}+2}>{ }^8 \mathrm{C}_3\)…
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