Multiple Choice Questions on If m and n are whole numbers such that mn 121 then m ndash 1 n 1 ........ for Graduation cum Career Security Preparation

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Multiple Choice Questions

If m and n are whole numbers such that mn 121 then m ndash 1 n 1 ........

Quantitative Aptitude (CCS) Algebra
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    If m and n are whole numbers such that mn = 121, then (m – 1)n + 1 = ?

    100

    Incorrect Answer

    1000

    Correct Answer

    10000

    Incorrect Answer

    10

    Incorrect Answer
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    Explanation:

    Given that mn = 121 ⇒ mn = (11)2
    Hencem m = 11 and n = 2
    Putting these values, we get
    (m – 1)n + 1 = (11 – 1)2 + 1 
    = (10)3 = 1000.

    By: Amit Kumar
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