I have feet, but no legs. Which animal Am I?

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

What's the only room from which no one can enter or leave

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Why do we preferably have round manhole covers and not square ones?

Can you solve below mathematical equation?

2^1234 - 2^1233

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?