Question

test the following for the divisibility by 3 and 9. 145404

Answer 1

1+4+5+4+0+4=18
18 is divided by both 3 and 9.
therefore, 145404 is also divisible by 3 and 9 .

hope it helps ☺☺

Answer 2

Given :  145404

To Find : test the divisibility  by 3 and 9

Solution:

A number is divisible by 3 if sum of digits is divisible by 3

A number is divisible by 9 if sum of digits is divisible by 9

145404

Sum of digits = 1 + 4 + 5 + 4 + 0 + 4

= 18

18/3 = 6

18 is divisible by 3

18/9 = 2

18 is divisible by 9

145404/3  = 48468

145404/9  = 16156

Hence 145404  is divisible by 3   and 9  both

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