1) You are at the side of a river. You are given a 3-litre jug and a 5-litre jug. Both the jugs are initially empty. The jugs don’t have markings to allow measuring smaller quantities. You have to use the jugs to measure 4 litres of water. Determine the minimum no of operations to be performed to obtain 4 litres of water in one of the jugs.

2) You have a birthday cake and have to cut it into 8 equal pieces by making 3 cuts only. How do you do it?