Number System : Divisibility by 7

divisibility by 7
divisibility by 7

Shashank Madhukar

A web Enthusiast, IITian , CAT 17 : 98.95. XAT 16 : Converted XLRI

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1 Response

  1. Nidhi says:

    One more method is there, especially for larger numbers:
    The number will be divided by 7, if and only if the difference of the number of its thousands and the reminder of its division by 1000 is divisible by 7.
    Example: 770546 is divisible by 7 or not.
    Solution: 770-546 = 224
    224/7 = 32
    So, 770546 is divisible by 7.
    Note: Same rule applies for 11 and 13 also.

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