A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

Whats the next number in the below number sequence pattern.

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What time is it when an elephant sits on a fence?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

Why Wine Glass Stem is so long?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.