if time is 22:22 after how many time will all digits be the same.
There are only 24 hours in a day. So the next time is 1:11. I borrow one hour and change it to 60 minutes.
24 - 22:22 = 23:60 - 22:22
= 1:38 + 1:11 = 2: 49 2 hours and 49 minutes later.