Permutation & Combination

Are you preparing for campus placements,Banking,SSC, IAS, Insurance,Defence and other competitive exams? Then, make sure to take some time in practicing the Permutation & Combination questions and answer in Quantitative Aptitude. Moreover, only those questions are included that are relevant and likely to be asked in any competitive exam. So, take these questions and answer, brush up your skills and practice to stay fully prepared for any your exam.

• Q8.The sum of all values of r in $${}^{18}{C}_{r–2}+2{·}^{18}{C}_{r–1}{+}^{18}{C}_r{³}^{20}{C}_{13}$$ must be

  A) 70
  B) 80
  C) 90
  D) 100
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• Q9.When simplified, the expression $${}^{37}{C}_4+{\displaystyle \sum }_{\text{p}=1}^5{}^{42-\text{p}}{\text{C}}_3$$ equals

  A) $${}^{37}{C}_{5 }$$
  B) $${ }^{39}{C}_{4 }$$
  C) $${}^{42}{C}_{5 }$$
  D) $${ }^{42}{C}_4$$
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• Q10.The number of different ways the letters of the word MONICA can be Placed in the 8 boxes of the given below such that no row empty is equal to
  

  A) 26
  B) 26 × 6!
  C) 6!
  D) 2! × 6!
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• Q11.There is one male and one female candidate in an election held in a society having 10 men and 8 women eligible for voting. If 8 men are bribed to vote for the male candidate, in how many ways the male candidate can win?

  A) 1045
  B) 1252
  C) 1013
  D) 1210
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• Q12.There are two urns having 10 red balls and 5 green balls respectively. If a total of 7 balls are to be drawn choosing at least 3 red balls and 2 green, find the total number of ways in which balls can be drawn.

  A) 5220
  B) 3624
  C) 4680
  D) 1062
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• Q13.How many different players can be selected for playing badminton out of 4 ladies and 3 gentlemen there being one lady and one gentleman on each side?

  A) 65
  B) 68
  C) 76
  D) 72
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• Q14.How many words of 4 letter beginning with either T or N can be formed with the letters of the word ‘EQUATION’?

  A) 480
  B) 410
  C) 420
  D) 460
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