Multiple Choice Questions on What is the maximum value of m if the number N 90 times 42 times 324 times 55 is divisible by 3 ........ for CDS Exam Preparation

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Multiple Choice Questions

What is the maximum value of m if the number N 90 times 42 times 324 times 55 is divisible by 3 ........

Quantitative Aptitude (CDS) Simplification
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    What is the maximum value of m, if the number N = 90 × 42 × 324 × 55 is divisible by 3???

    8

    Incorrect Answer

    7

    Correct Answer

    6

    Incorrect Answer

    5

    Incorrect Answer
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    Explanation:

    Here N = 90 × 42 × 324 × 55

     Now 90 = 3 × 3 × 10 = 32 × 10

    42 = 14 × 3 = 14 × 31

    324 = 3 × 3 × 3 × 3 × 4 = 34 × 4

    55 = 11 × 5

    N = 32 × 31 × 34 × 10 × 14 × 4 × 11 × 5

    N = 37 × 10 × 14 × 4 × 11 × 5

    Maximum value of m = 7

    By: Munesh Kumari
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