Which of the following numbers is divisible by 72?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 22112136
⇒ 22112136
By applying the divisibility rule of 8
⇒ 136 ÷ 8 = 17
These last 3 digits get divided by 8
So, 22112136 is also divided by 8
By checking the divisibility rule of 9
⇒ (2 + 2 + 1 + 1 + 2 + 1 + 3 + 6) = 18
⇒ 18 is completely divided by 9.
Here, the number is divided by both 8 and 9
So, it is divided by 72 as well.