I borrowed $50 from mum and $50 from dad to buy a bag costing $97. After the purchase, I had $3 left. I returned $1 to dad and $1 to mum, and reserved $1 for myself. I now owe $49+$49=$98 plus the $1 I reserved for myself, which is $99. Where is the missing $1?

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We're five items of an everyday sort. You'll find us on “a tennis court”. What are we?

I have billions of eyes, yet I live in darkness. I have millions of ears, yet only four lobes. I have no muscle, yet I rule two hemispheres. What am I?

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You work at a fruit factory.

There are 3 crates in front of you. One crate contains only apples. One crate contains only oranges. The other crate contains both apples and oranges.

And each crate is labeled. One reads “apples”, one reads “oranges”, and one reads “apples and oranges”.

But the labeling machine has gone crazy and is now labeling all boxes incorrectly.

If you can only take out and look at just one of the pieces of fruit from just one of the crates, how can you label ALL of the crates correctly?

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1+4 = 5

2+5 = 12

3+6 = 21

8+11 = ?

Find the correct pattern.

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Ten band members have had their musical instruments placed randomly in boxes. Each band member gets five shots at opening boxes, trying to find their own instrument. (Thus, a 50% chance of each individual finding the desired instrument.) They're not allowed to communicate about what they find. If the entire band fails to find their instruments, they're all fired…and the odds of them all finding their instruments via random guessing is 1 in 1,024. But the drummer has an idea that will radically increase their odds of success. What's the big idea? Rules:

1. Instruments have been randomly placed in 10 boxes.

2. The pictures on the boxes don't necessarily correspond to the instruments inside.

3. Each musician can open up to 5 boxes. They have to close all of the boxes they open.

4. All 10 musicians must find their own instruments.

5. The musicians can't in any way communicate to each other what they find.

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You have a juice glass that is 6oz, a drink glass that is 9oz, and a 4oz yogurt container. What is the minimum number of moves that you can 6 oz of a liquid into the juice glass using the 9oz and 4oz containers?

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 1    3
 2    4
 7    5 
 9    8
 

The numbers above represent 8 cards with those numbers written on them. The left column adds up to 19 and the right adds up to 20. How can you alter the cards so that the columns add up to the same number.

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