Question

15-12 and 12-15______' -21-32 and -32- -21______'​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

Given number = 221

For a number to be divisible by 3 sum of digits must be divisible by 3.

Sum of digits = 2 + 2 + 1 = 5

Since 5 is not divisible by 3, therefore 221 not divisible by 3

(ii) 543

Given number = 543

For a number to be divisible by 3 sum of digits must be divisible by 3.

Sum of digits = 5 + 4 + 3 = 12

Since 12 is divisible by 3, therefore 543 is divisible by 3.