The largest 4 digit number exactly divisible by 88 is:
9944
9988
9966
8888
We have, Largest 4-digit number = 9999 88) 9999 (113 9944 ----------- 55 ⇒ When 9999 is divided by 88, remainder is 55. ∴ Required number = (9999 - 55) = 9944