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

What number do you get when you multiply all of the numbers on a telephone's number pad?

What is the next number in the series?

15 29 56 108 208 ?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

What is the difference between a jeweller and a jailer?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

What do you answer even though it never asks you questions?

What does this rebus puzzle means ?

What word is pronounced the same if you take away four of its five letters?