Question

Which of the following numbers is divisible by 12?

• A. 53412
• B. 43412
• C. 33412
• D. 63412

Answer 1

Answer:

A. 53412

Solution: To check the divisibility by 12, we should check the divisibility by 4 and 3. To check the divisibility by 3, the sum of digits of the number must be divisible by 3. To check the divisibility by 4, the last two digits of the number must be divisible by 4. The only number that is divisible by 3 is 53412 as the sum of its digit is 15 and divisible by 3. Alternate Method: Checking through options: Option 1 : 53412/12 = 4526 Option 2 : 43412/12 = 3617.66… Option 3 : 33412/12 = 2784.33… Option 4 : 63412/12 = 5284.33… ∴ 53412 is divisible by 12.