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    Subject

    Bank Exam

    Topic

    Union Bank 2014 (Sr. Officer)

    M is a girl and has the same number of brothers as sisters. N is a boy and has twice as many sisters as brothers. Mand N are the children of Q. How many children does Q have?

    ক)
    2
    খ)
    3
    গ)
    5
    ঘ)
    7

    Explanation

    Let the number of male kids be x. For M, number of brothers = x number of sisters = x number of girl kid = x+1 For N, number of male kid = x number of brothers = x-1 number of sisters = 2(x-1) now, A/Q, x+1 + x = x + 2(x-1) 2x + 1 = x  + 2x – 2 2x +x -2x =1+2 x = 3 number of male kid = 3 number of girl kid = 3 + 1 = 4 Total kids = 3 + 4 = 7

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