Correct Answer - Option 3 : 9
Given
79874W6 is divisible by 4.
Formula used
As per the divisibility rule of 4, any number is divisible by 4 if number forming by last two digits of the given number is divisible by 4 i.e W6 should be divisible by 4.
Calculation
⇒ Now we have to check for what value of W, W6 will be divisible by 4.
⇒ Clearly W can have values : 1, 3, 5, 7, 9.
⇒ Among the following values 9 is the highest
∴ maximum value of W is 9