Lateral Thinking Riddles

Lateral thinking puzzles involve solving problems through an indirect and creative approach, using reasoning that is not immediately obvious, thinking out of the box and involving ideas that may not be obtainable by using only traditional step-by-step logic.

Short of Cash

A man phoned his daughter to ask her to buy a few things he needed for a trip. He told her she would find enough dollar bills for the purchases in an envelope on his desk. She found the envelope with 98 written on it.

In a store she bought $90 worth of things, but when it was time to pay she not only didn’t have $8 left over but she was short. By how much was she short of cash, and why?

Riddle Answer

3 Light Switches for 1 Light Bulb

You have a set of 3 light switches outside a closed door. One of them controls the incandescent light bulb inside the room. With the door closed from outside the room, you can turn the light switches on or off as many times as you would like.

You can go into the room – one time only – to see the light. You cannot see whether the light is on or off from outside the room, nor can you change the light switches while inside the room.

No one else is in the room to help you. The room has no windows.

Based on the information above, how would you determine which of the three light switches controls the light inside the room?

Riddle Answer