*1k views**131 ratings**6 saves*

**Question: **Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a sports car; behind all of the others is bicycles. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 2, revealing a bicycle. He then says to you, "Do you want to pick door No. 3?" Is it to your advantage to switch your choice?

*3.5M views**4382 ratings**19 saves*

**Question: **When is 99 more than 100?

*3k views**211 ratings**15 saves*

**Question: **You have a glass of water that looks about half full. How can you tell, only using the glass of water itself, if the glass is half full or not?

The glass is a right cylinder.

*4k views**295 ratings**24 saves*

**Question: **Mr. Smith has 4 daughters. Each of his daughters has a brother.

How many children does Mr. Smith have?

*76.9k views**74 ratings**4 saves*

**Question: **Jasmine has a toaster with two slots that toasts one side of each piece of bread at a time, and it takes one minute to do so.

If she wants to make 3 pieces of toast, what is the least amount of time she needs to toast them on both sides?

*3k views**293 ratings**9 saves*

**Question: **How can you add 8 8's to make 1000?