9th Class Mathematics Permutations and Combinations Question Bank

done Permutation & Combination Total Questions - 10

• question_answer1)
  In how many ways three different rings can be in four fingers with at most in each finger?
  A)
  24  done clear
  B)
                                 12 done clear
  C)
  36                     done clear
  D)
           120 done clear
  E)
  None of these done clear
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• question_answer2)
  In how many ways can 7 soldiers stand in a queue?
  A)
  5040       done clear
  B)
          2880 done clear
  C)
  280                      done clear
  D)
         285 done clear
  E)
  None of these done clear
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• question_answer3)
  How many different words can be formed with the letters of the word NAINITAL such that each of the word begin with L and end with T?
  A)
  90        done clear
  B)
         80 done clear
  C)
  88                        done clear
  D)
        82 done clear
  E)
  None of these done clear
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• question_answer4)
  How many numbers of 5 digits can be formed with the digits 0,2,3,4 and 5 if the digits may repeat?
  A)
  2500        done clear
  B)
         250 done clear
  C)
  120                             done clear
  D)
  2400 done clear
  E)
  None of these done clear
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• question_answer5)
  In how many ways 4 rings of different types can be worn in 3 fingers?
  A)
  49                       done clear
  B)
         12 done clear
  C)
  24                        done clear
  D)
         81 done clear
  E)
  None of these done clear
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• question_answer6)
  In how many ways can n balls be randomly distributed in n cells?
  A)
  \[n!\]                        done clear
  B)
         \[{{n}^{n}}\] done clear
  C)
  \[n\,(n-1)\]                done clear
  D)
         \[{{2}^{n}}\] done clear
  E)
  None of these done clear
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• question_answer7)
  In a test paper there are total 10 questions. In how many different ways can you choose 6 questions to answer?
  A)
  210     done clear
  B)
          540 done clear
  C)
  336                      done clear
  D)
         340 done clear
  E)
  None of these done clear
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• question_answer8)
  Draupadi has 5 friends. In how many ways can she invite one or more of them to a dinner?
  A)
  \[31\]   done clear
  B)
           \[{{5}^{5}}\] done clear
  C)
  \[13\]                       done clear
  D)
          \[{{2}^{5}}\] done clear
  E)
  None of these done clear
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• question_answer9)
  A committee of 5 persons is to be formed out of 6 gents and 4 ladies. In how many ways this can be done, when at most two ladies are included?
  A)
  186      done clear
  B)
          168 done clear
  C)
  136                      done clear
  D)
         169 done clear
  E)
  None of these done clear
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• question_answer10)
  Find the number of ways of selecting 4 letters from the word EXAMINATION.
  A)
  136     done clear
  B)
          126 done clear
  C)
  252                      done clear
  D)
         525 done clear
  E)
  None of these done clear
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