There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

Can you move 2 matchsticks to form four equal sized squares.

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?