What does an Island and the letter T have in common?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

The King of a distant land had heard that Birbal was one of the wisest men in the East and so desired to meet Birbal. He sent Birbal an invitation to visit his country.

In due course, Birbal arrived in the distant kingdom. When he entered the palace he was flabbergasted to find not one but six kings seated there. All looked alike. All were dressed in kingly robes. Who was the real king?

The very next moment he got his answer. Confidently, he approached the king and bowed to him.

How did Birbal know who was the real king?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

What two things can you never eat for breakfast?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

If six children and two dogs were under an umbrella, how come none of them got wet?

What brings you down but never up?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?