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  3. CET Karnataka Engineering

CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2011

  • question_answer
    The sum of all positive divisors of 242 except 1and itself is

    A)  156                                       

    B)  242

    C)  342                                       

    D)  399

    Correct Answer: A

    Solution :

    The number is 242. \[242=2\times 11\times 11\] (factors) The number of positive divisors except 1 and itself is =2, 11, 22, 121 Sum of these numbers \[=2+11+22+121=156\]


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