A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

There is a place where if I stand up straight, I will still be considered sideways.

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

What is the fastest way to double your money?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

How many triangles are there on the puzzle below?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

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

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?