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Railways Sample Paper RRB (Group D) Sample Test Paper-6

  • question_answer
    DIRECTION: In each of the following questions,, some questions are solved on the basis of a certain system. On the same basis, find out the correct answer for the unsolved equation. If 235=38 and 452=45, then 345=?

    A)  49                   

    B)  66

    C)  72                   

    D)  50

    Correct Answer: D

    Solution :

    [d] \[235\Rightarrow {{(2)}^{2}}+{{(3)}^{2}}+{{(5)}^{2}}=38\] \[452\Rightarrow {{(4)}^{2}}+{{(5)}^{2}}+{{(2)}^{2}}=45\] \[345\Rightarrow {{(3)}^{2}}+{{(4)}^{2}}+{{(5)}^{2}}=[50]\]


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