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If a number 79874W6 is divisible by 4, then the maximum value of W is?
1. 6
2. 7
3. 9
4. 2

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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

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