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KVPY Sample Paper KVPY Stream-SX Model Paper-7

  • question_answer
    The sum all two digit positive numbers which when divided by 7 yield 2 or 5 as remainder is:

    A) 1256                

    B)  1465

    C) 1365                

    D) 1356

    Correct Answer: D

    Solution :

    Two digit numbers of the form\[7\lambda +2\]are\[16,23...\]\[93\]. Two digit numbers of the form\[7\lambda +5\]are\[12,19...,\]\[96\] Sum of all the above numbers equals to \[\frac{12}{2}(16+93)+\frac{13}{2}(12+96)=654+702=1356.\]


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