Which alphabet letter is a question?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

How many times can you subtract the number 5 from 25?

What is more useful when it is broken?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Replace the question mark with the correct number in below Picture:

How many times do a clock's hands overlap in a day ?

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?

What word does this rebus represent?

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