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Railways Sample Paper RRB (Group D) Sample Test Paper-14

  • question_answer
    Three of the following four are alike in a certain way and hence form a group. Which one of the following is different from the group?

    A)  226                 

    B)  290

    C)  360     

    D) 170

    Correct Answer: C

    Solution :

    [c] After a close look you will get that except 360 each number is one more than square of a natural number, i.e.,\[226={{15}^{2}}+1\,\,;\,\,290={{17}^{2}}+1\,\,;\,\,170={{13}^{2}}+1;\] \[122={{11}^{2}}+1\].


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