Question

Test the divisibility of the following numbers by 3:
(i) 733
(ii) 10038
(iv) 524781
(v) 79124​

Answer 1

1. 13 is not divisible by 3

2. 12 is divisible by 3

3. 27 is divisible by 3

4. 23 is not divisible by 3

Answer 2

Answer:

If the sum of the given number is divisible by 3 then the given number will divisible by 3

1. 733

sum : 7+3+3= 13

13 is not divisible by 3

Therefore 733 will not divisible by 3

2.10038

sum : 1+0+0+3+8= 12

12 is divisible by 3

Therefore 10038 will divisible by 3

3.524781

sum : 5+2+4+7+8+1= 27

27 is divisible by 3

Therefore 524781 will divisible by 3

4.79124

sum : 7+9+1+2+4= 23

23 is not divisible by 3

Therefore 79124 will not divisible by 3.