*1k views**122 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?

*3.4M views**4273 ratings**19 saves*

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

*4k views**287 ratings**23 saves*

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

How many children does Mr. Smith have?

*11.1k views**13 ratings**0 saves*

**Question: **If 4+5=24
7+2=21
9+6=63
6+7=?

*3k views**208 ratings**14 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.

*76.1k 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?