If eleven plus two equals one, what does nine plus five equal?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

Our product and our sum always give the same answer. Who are we?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Identify the hidden meaning behind this picture?