Which is faster, Heat or Cold ? Explain.

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?

Can you write down eight eights so that they add up to one thousand?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

Which is the smallest number that you can write using all the vowels exactly once?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Why is the longest human nose just 11 inches?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

How can you make number one disappear by adding something to it?