False(F)

If there is a four digit number abcd and if ab is divisible by 4 then its not necessary that abcd will also be divisible by 4.If a number is divisible by 4,then the number formed by it’s digits in unit’s place and ten’s place is divisible by 4.

For example: Let us suppose the number abcd is 2463 , here 24 is divisible by 4 but 2463 is not divisible by 4.