6th Class Mathematics Mental Ability Question Bank Mental Ability

  • question_answer On the eve of Holi festival, a group of 15 friends greeted every other friend by sending greeting cards. Find the number of cards purchased by group.

    A)  156

    B)  144

    C)  210

    D)  320

    Correct Answer: C

    Solution :

    There being 15 friends in the group, each friend must have purchased \[(15-1)\] i.e 14 cards for sending greeting to rest of his 14 friends. Thus total number of cards Purchased by all the friends together is \[15\times 14\] i.e. 210.

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