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CompetitiveQuantitative AptitudePermutation and CombinationPermutation and Combination
Medium

$^nC_r + 2^nC_{r-1} + ^nC_{r-2} = $

  • A
    $^{n+1}C_r$
  • B
    $^{n+1}C_{r+1}$
  • C
    $^{n+2}C_r$
  • D
    $^{n+2}C_{r+1}$
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Quantitative Aptitude Questions

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Permutation and Combination

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Permutation and Combination

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