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.

  • Q22.For 2rn,( n r )+2( n r1 )+( n r2 ) is equal to

    Show Solution Report Error
    Please wait...
  • Q23.The exponent of 5 in 100 C 50 is

    Show Solution Report Error
    Please wait...
  • Q24. Let f(x) denotes the No. of different ways the positive integer k can be expressed as the sum of 1’s and 2’s for x.
    f(x)=4
    4 = 1 + 1 + 1 + 1
    = 1 + 1 + 2
    = 1 + 2 + 1
    = 2 + 1 + 1
    = 2 + 2
    Then value of f (6) is

    Show Solution Report Error
    Please wait...
  • Q25.The No. of different ways the letters of the word SHWETA can be placed in the 8 boxes of the given below such that no row empty is equal to

    Show Solution Report Error
    Please wait...
  • Q26.The least positive integral value of k which satisfies the inequality 10 C k1 >  2. 10 C k is:

    Show Solution Report Error
    Please wait...
  • Q27. Find the number of one–one mappings from A to B such that f( a i ) b i , i = 1, 2, 3, 4, 5, 6, given A =  { a 1 ,  a 2 ,  a 3 ,  a 4 ,  a 5 ,  a 6 }, B = { b 1 ,  b 2 ,  b 3 ,  b 4 ,  b 5 ,  b 6 }.

    Show Solution Report Error
    Please wait...
  • Q28.When simplified, the expression 47 C 4 + p=1 5     52p C 3 equals

    Show Solution Report Error
    Please wait...