Find the next number in the series.
1 10 24 43 67 ?

Count the number of lines in the image below ?

I am the fastest animal but cannot climb the tree. What am I?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

If 21x = 79x, what is the value of x?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

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

Can you name four days which start with the letter 'T'?