It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What is the difference between a jeweller and a jailer?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Four children having five rocks each were playing a game in which they had to throw the rock at a particular solid area in the water. Child 1- Succeeded in throwing three rocks at a solid area but one of the rocks sunk. Child 3 - His aim was so bad that all rocks got sunk. Child 4- He was awesome and none of the rocks got sunk. Child 2 - Was the winner but was struck by a rock in the head and died. Who killed Child 2?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

What breaks yet never falls, and what falls yet never breaks?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

You see me once in June, twice in November, and not at all in May. What am I?