Before Mount Everest was discovered, what was the highest mountain in the world?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

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

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

If two's company, and three's a crowd, then whats four and five ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?