Quant Boosters - Rajesh Balasubramanian - Set 2



  • 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.


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