What is the coolest letter in the alphabet?

Why is the Hole below a Lock?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

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?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

I travel all around the world but always stay in the corner. What am I?

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

What is the next number in this matchsticks series riddle?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?