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Railways R.R.C. (Hajipur) Solved Paper Held on 1st Shift 30-11-2014

  • question_answer
    A boy was asked to multiply a number by 12. By mistake, he multiplied the number by 21 and got his answer 63 more than the correct answer. The number was?

    A) 7                                 

    B) 8

    C) 9                                 

    D) 12

    Correct Answer: A

    Solution :

    Suppose number = x Then,    \[x\times 12+63=x\times 21\] \[63=x\times 9\] \[x=7\]  


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