Question

723
9604
8325
201,364
check the divisibility of the following numbers by 3

Answer 1

723 is divisible
9604 is not divisible
8325 is divisible
201,364 is not divisible

Answer 2

Hey dear!!
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To check the divisibility of the any number by 3, we should know what is rule of divisibility by 3. 

The rule of the divisibility by 3 states that:

A number is divisible by 3 if the sum of the digits of the number are divisible by 3. 

So, now as we know how to check the divisibility of a number by 3, we will proceed to your question:

(i) 723 
Sum of the digits = 7 + 2 + 3 = 12 
Since 12 is divisible by 3, 723 is also divisible by 3. 

(ii) 9604
Sum of the digits = 9 + 6 + 0 + 4 = 19 
Since 19 is not divisible by 3, 9604 is not divisible by 3. 

(iii) 8325 
Sum of the digits = 8 + 3 + 2 + 5 = 18 
Since 18 is divisible by 3, 8325 is divisible by 3. 

(iv) 201364 
Sum of the digits = 2 + 0 + 1 + 3 + 6 + 4 = 16
Since 16 is not divisible by 3, 201364 is not divisible by 3. 

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Hope helped!!