From the following numbers, find the number which exactly divisible by 42.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 25242.
We know that,
When a number is divisible by 42 then, it must be divisible by 2, 3, and 7.
So,
Using the divisibility of 2, 3, and 7.
Options 1: 2 + 5 + 2 + 3 + 2 = 14 not divisible by 3.
Options 2: 2 + 5 + 2 + 4 + 2 = 15 divisible by 3
Options 3: 2 + 5 + 2 + 4 + 4 = 17 not divisible by 3
Option 4: 2 + 5 + 2 + 1 + 2 = 12 divisible by 3
So, Options 2 and 3 are possible cases
But,
Option 2 i.e. 25242 is also divisible by 7
Hence, 25242 is divisible by 42