Question

Which of the following number is not divisible by $3$?

• A. $353$
• B. $545$
• C. $3024$
• D. $736$

Answer 1

Answer: (A), (B), (D)

$736$

For a number to be divisible by $3$, Sum of digits of that number should be divisible by $3$.
Calculating sum of digits of each number and deducing the conclusion wheather it is divisible by $3$ or not,

option (a) $353=3+5+3=11$
Here, $11$ is not divisible by 3. So, the number is also not divisible by 3.

option (b) $545=5+4+5=14$.
Here, $14$ is not divisible by 3. So, the number is also not divisible by 3.

option (c)$3024=3+0+2+4=9$.
Here, $9$ is divisible by 3. So, the number is also divisible by 3.

option (d) $736=7+3+6=16$.
Here, $11$ is not divisible by 3. So, the number is also not divisible by 3.