Question

Which of the following numbers
is not divisible by 3 ?
(a) 123
(b) 132
(c) 231
(d) 134​

Answer 1

All are divisible by 3.

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Answer 2

Answer:

divisiblity rule of 3,

add all the number if the sum of the number is divisible by 3 then the number is divisible by 3

so let's check these four numbers

(a) 123 = 1 + 2 + 3 = 6

6 is divisible by 3 so the number 123 is divisible by 3.

(b) 132 = 1 + 3 + 2 = 6

6 is divisible by 3 so the number 132 is divisible by 3.

(c) 231 = 2 + 3 + 1 = 6

6 is divisible by 3 so the number 231 is divisible by 3.

(d) 134 = 1 + 3 + 4 = 8

8 is not divisible by 3 so the number 134 is not divisible by 3

hence d part i.e 134 is not divisible by 3