Multiple Choice Questions on In a society it is customary for friends of the same sex to hug and for friends of opposite sex to s........... for Civil Services Exam (CSAT) Preparation

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Multiple Choice Questions

In a society it is customary for friends of the same sex to hug and for friends of opposite sex to s...........

Math and Mental Ability Permutation & Combination
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    In a society it is customary for friends of the same sex to hug and for friends of opposite sex to shake hands when they meet. A group of friends met in a party and there were 24 handshakes.

    Which one among the following numbers indicates the possible number of hugs?

    This questions was previously asked in
    Complete-Test, Previous year (2015)
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    39

    Incorrect Answer

    30

    Incorrect Answer

    21

    Correct Answer

    20

    Incorrect Answer
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    Explanation:

    Here factorize 24 which is 6x4

    now if 6 are boys and 4 girls

    then total handshakes among boys and girls = 6x4=24

    Boys will hug among themselves = 5+4+3+2+1=15

    Girls will hug among themselves = 3+2+1=6

    ∴Total hug = 15+6=21 ways

    By: Amit Kumar
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