Navigation

    • Register
    • Login
    • Search
    • Home
    • Recent
    • Tags
    • [email protected]
    • @MBAtious
    • [email protected]
    1. Home
    2. Tags
    3. permutation & combination
    Log in to post

    • Quant Boosters - Rajesh Balasubramanian - Set 2
      Quant - Boosters • permutation & combination • • rajesh_balasubramanian  

      61
      0
      Votes
      61
      Posts
      7321
      Views

      Exactly one of ab, bc and ca is odd => Two are odd and one is even abc is a multiple of 4 => the even number is a multiple of 4 The arithmetic mean of a and b is an integer => a and b are odd and so is the arithmetic mean of a, b and c. => a+ b + c is a multiple of 3 c can be 4 or 8. c = 4; a, b can be 3, 5 or 5, 9 c = 8; a, b can be 3, 7 or 7, 9 Four triplets are possible.
    • Quant Boosters - Rajesh Balasubramanian - Set 1
      Quant - Boosters • permutation & combination • • rajesh_balasubramanian  

      61
      0
      Votes
      61
      Posts
      6316
      Views

      No two boys sit next to each other => Boys and girls must alternate. As they are seated around a circular table, there is no other possibility. Now, 4 boys and 4 girls need to be seated around a circular table such that they alternate. Again, let us do this in two steps. Step I: Let 4 boys occupy seats around a circle. This can be done in 3! ways. Step II: Let 4 girls take the 4 seats between the boys. This can be done in 4! ways. Note that when the girls go to occupy seats around the table, the idea of the circular arrangement is gone. Girls occupy seats between the boys. The seats are defined as seat between B1 & B2, B2 & B3, B3 & B4 or B4 & B1. So there are 4! ways of doing this. Total number of ways = 3! × 4! = 6 × 24 = 144
    • Finding Number of Positive & Non-Negative Integral Solutions For a + b + c + ... = N & Its Applications
      Quant Primer • theory of equations permutation & combination • • zabeer  

      1
      0
      Votes
      1
      Posts
      11878
      Views

      No one has replied

    • Permutations & Combinations - Nikhil Goyal
      Quant Primer • permutation & combination • • Nikhil Goyal  

      1
      2
      Votes
      1
      Posts
      5547
      Views

      No one has replied

    • Permutations & Combination : Fundamental Principles Of Counting - Ravi Handa
      Quant Primer • permutation & combination • • handakafunda  

      1
      0
      Votes
      1
      Posts
      2911
      Views

      No one has replied

    • Permutations and Combinations - Anubhav Sehgal
      Quant Primer • permutation & combination • • anubhav_sehgal  

      1
      1
      Votes
      1
      Posts
      2944
      Views

      No one has replied

    • Permutation & Combination - Abhishek Singhania, IIM Lucknow
      Quant Primer • permutation & combination • • mbatious  

      1
      0
      Votes
      1
      Posts
      4140
      Views

      No one has replied

    • Permutation & Combination Concepts by Gaurav Sharma - Part (2/2)
      Quant Primer • permutation & combination • • gaurav_sharma  

      1
      0
      Votes
      1
      Posts
      14025
      Views

      No one has replied

    • Permutation & Combination Concepts by Gaurav Sharma - Part (1/2)
      Quant Primer • permutation & combination • • gaurav_sharma  

      1
      0
      Votes
      1
      Posts
      7305
      Views

      No one has replied

    • The Feline Trouble Beckons - This time It’s PnC and its applications - Ankan Sengupta, FMS Delhi
      Quant Primer • permutation & combination • • ankan_sengupta  

      1
      2
      Votes
      1
      Posts
      2325
      Views

      No one has replied

    • Demystifying Permutation & Combination - Rajesh Balasubramanian - CAT 100th Percentile - CAT 2011, 2012, 2014 & 2017
      Quant Primer • permutation & combination • • rajesh_balasubramanian  

      1
      0
      Votes
      1
      Posts
      4366
      Views

      No one has replied