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 03-10-2007, 02:14 PM #1 Golden Master     Join Date: Sep 2006 Posts: 6,798 Brain teaser Ok, this isn't really a joke but it came up on a team build once. It will still confuse anyone you run it past. Three students decide to club together to buy a TV. They see one in a shop for £30. They buy the TV, and each of them hands over a £10 note. The shopkeeper tells them that it is ex-demo and so he'll knock £5 off the price. He hands back 5 pound coins. To keep things simple, each student takes £1 and they put the spare £2 into a charity tin on the counter. The problem is, now each of them has handed over £9 (£10 and received £1 back). 3 x £9 is £27. There is £2 in the charity tin. £27 + £2 = £29. Where is the remaining £1 from the original £30 they paid? Il post the answer later, if no one gets it __________________ __________________
 03-10-2007, 02:35 PM #2 Golden Master     Join Date: Jul 2004 Location: USA Posts: 8,463 Re: Brain teaser It's all in the order in which you do the math. 30 for the tv He says he'll take 5 off for it being a demo 25 for the tv each person takes 1 dollar back 25 + 3 = 28 plus the 2 in the charity bin 28 + 2 = 30 __________________ __________________ When all else fails...Ham Radio! I still have the same old HP DV9700T laptop I've had for years...still kickin'
 03-10-2007, 02:37 PM #3 Golden Master     Join Date: Sep 2006 Posts: 7,883 Re: Brain teaser Alright, I've been thinking about this for like 10 minutes so far. The owner has 25. Assuming each student only brought 10 into the store, they all have 1. The charity bin has 2 25+3+2=30. EDIT - Ah, Tommy beat me. __________________ C2D E6600 | 4GB DDR2-800 | 9800GTX+ | Asus P5B-E | 150GB Raptor | 320GB 7200.10 | 750W Xigmatek PSU
 03-10-2007, 02:38 PM #4 Golden Master     Join Date: Sep 2006 Posts: 6,798 Re: Brain teaser Hmmm sort of, but there is an error in the first post if you look __________________
 03-10-2007, 02:41 PM #5 Golden Master     Join Date: Sep 2006 Posts: 7,883 Re: Brain teaser Ok, so when you say £27 + £2 = £29 It should really be £27 - £2 = £25. To show how much they paid. And then 30-25= the 5 they got back. __________________ C2D E6600 | 4GB DDR2-800 | 9800GTX+ | Asus P5B-E | 150GB Raptor | 320GB 7200.10 | 750W Xigmatek PSU
 03-10-2007, 02:42 PM #6 Golden Master     Join Date: Oct 2006 Posts: 6,928 Re: Brain teaser as above , it is in the order you say it cos , the shop has £25 each student has £1 and the charity bin has £2 so 25+3+2=30 __________________ Desktop-AMD Athlon 64 X2 6000+-2GB Elixer DDR2 800 250gb+500gb+500gb+120gb Laptop-Apple Macbook Pro 13" Intel core i5(2.3ghz) 4gb Ram 320gb hard drive
 03-10-2007, 02:43 PM #7 Golden Master     Join Date: Sep 2006 Posts: 6,798 Re: Brain teaser Well ya just about there. The £27 is the cost of the TV AND the £2 that went in the charity tin. That last bit of the puzzle is misleading because the charity tin donation has already been included in the total cost so you shouldn't be adding it on again. __________________
 03-10-2007, 02:47 PM #8 Golden Master     Join Date: Sep 2006 Posts: 7,883 Re: Brain teaser Oh....I hate brain teasers. __________________ C2D E6600 | 4GB DDR2-800 | 9800GTX+ | Asus P5B-E | 150GB Raptor | 320GB 7200.10 | 750W Xigmatek PSU
 03-10-2007, 04:55 PM #9 Fully Optimized     Join Date: May 2005 Location: United States Posts: 2,605 Re: Brain teaser This was definitely a brain teaser for some, but for me, I honestly noticed it almost immediately. __________________
03-10-2007, 05:13 PM   #10
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Join Date: Dec 2002
Posts: 15,233
Re: Brain teaser

Quote:
 Originally Posted by Raffaz Well ya just about there. The £27 is the cost of the TV AND the £2 that went in the charity tin. That last bit of the puzzle is misleading because the charity tin donation has already been included in the total cost so you shouldn't be adding it on again.
Ah I get it, had me puzzled there for a few minutes there.

Not to hijack this thread, but can anyone remember the solution to the 3 gallon and 5 gallon jugs trying to make 4 gallons?
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