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    5. A number when divided by 21 gives a remainder of 7. What would be the remainder when six times the n

    Question

    A number when divided by 21 gives a remainder of 7. What

    would be the remainder when six times the number is divided by 21?
    A 2 Correct Answer Incorrect Answer
    B 3 Correct Answer Incorrect Answer
    C 1 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the number be:

    Number = 21E + 7, where E is an integer.

    Six times the number = 6 × (21E + 7) = 126E + 42

    Now divide by 21:

    (126E + 42) = (126E + 21 + 21)

    ⇒ Remainder = 0

    Practice Next
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