A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

Can you find out the total number of triangles in the given figure?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

What four weights can be used to balance from 1 to 30 pounds?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

How can you make a TV, a bed, a dog, and a car liquid?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

No matter how little or how much you use me, you change me every month. What am I?

Can you solve the photo plexer logic ?

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?