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29 May, 21:03

Is the following conditional true?

If an integer is divisible by 9, then its digits add up to 9.

yes

no

+1
Answers (2)
  1. 29 May, 21:37
    0
    Yes, it is true. Ex. 3 x 9 = 27, 2 + 7 = 9.

    If you happen to have a larger number say, 639, you might have to add the digits together multiple times before you have your answer so, 6 + 3 + 9 = 18, then 1 + 8 = 9, so it is divisible by 9.
  2. 30 May, 00:11
    0
    Yes

    Explanation:

    2x9=18 and 1+8=9

    The pattern repeats
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