Question

An analogue clock is gaining three minutes every hour. If you set it to the correct time at 6pm on Saturday, when will it show the correct time again​

Answer 1

It must gather every 12 hours or 12*60=720 minutes. 3 minutes are gained every hour, so it needs exactly 10 days(240 hours) ... correct time will show Tuesday, at 6 PM, to be exact.