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

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

What does this rebus mean?

O
N
C
E
TIME

A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and a single one of his purchases: the wolf, the goat, or the cabbage. If left unattended together, the wolf would eat the goat, or the goat would eat the cabbage. The farmer’s challenge was to carry himself and his purchases to the far bank of the river, leaving each purchase intact. How did he do it?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?