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Banking Sample Paper SBI Clerk Grade (Main) Sample Test Paper-5

  • question_answer
    Direction: What will come in place of the question mark (?) in the following question?
    \[{{21}^{?}}\times {{21}^{6.5}}={{2}^{12.4}}\]

    A)  18.9

    B)  4.4

    C)  5.9

    D)  13.4

    E)  15.6

    Correct Answer: C

    Solution :

                     \[{{21}^{?}}\times {{21}^{6.5}}={{21}^{12.4}}\] \[\Rightarrow \]\[{{21}^{?+}}^{6.5}={{21}^{12.4}}\] \[\Rightarrow \]\[?+6.5=12.4\] \[\Rightarrow \]\[?=12.4-6.5=5.9\]


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