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18 May, 00:52

34,515 is divisible by

a. 3

b. 9

c. 5

Explain your reasoning for your choice (s).

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Answers (1)
  1. 18 May, 01:39
    0
    a b and c

    Step-by-step explanation:

    a) a number is divisible by 3 if the sum of its dígits is divisible by 3:

    3+4+5+1+5=18

    18 is divisible by 3 (6*3=18), then 34515 is divisible by 3 too.

    b) a number is divisible by 9 if the sum of its dígits is divisible by 9:

    3+4+5+1+5=18

    18 is divisible by 9 (9*2=18), then 34515 is divisible by 9 too.

    c) a number is divisible by 5 if its last digit is 5 or 0

    then, 34515 is divisible by 5
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