When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Why Wine Glass Stem is so long?

Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
The villagers loved to talk of Birbal's wisdom and cleverness,
and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
"Birbal," he ordered, "you must make this line shorter, but you cannot erase any bit of it."
Everyone present thought the emperor had finally outsmarted Birbal.
It was clearly an impossible task.
Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
How could this be?

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

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

The more you take me, the more you leave me behind.
Who Am I?

What seven-letter word has hundreds of letters in it?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

What does does this rebus picture means ?