A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

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?

What seven-letter word has hundreds of letters in it?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?