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I used to play these games all day back in high school. trust me i have had enough subs thrown my way to answr any riddle. this is your answer:
Flip the 7 and 11 min clocks at the same time because once the 7 mins runs out out the first clock, that tells you that there are only 4 mins remaining in the 11 minute clock. once the 7 clock runs out throw it away and immediatly flip the 11 minute one back over for the full eleven minutes. 4+11=15
elementary my dear watson

what,me worry?

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heres one. its more of a math problem, but its still good:

there are 2000 students at a school.
Each students takes 7 classes each day.
Each teacher teaches 5 classes a day.
Each class has 25 students.
for every 14 teachers, there is 1 assistant principal.

How many assistant principals are there at the school?
Last edited by wcaclimbing on Mon Nov 20, 2006 6:42 pm, edited 2 times in total.

wcaclimbing

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What, me worry is correct with the anser for the 15 min timer.
Any takers on wca's question??
Knowledge is Power
Timing is everything

Paulicus

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Location: British Columbia

4?

Spockers

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no

wcaclimbing

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Wow that's more than expected.. I take it this isn't realistic
Knowledge is Power
Timing is everything

Paulicus

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Location: British Columbia

I believe you need to know class size
sfhbballnut

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I believe its 7 assistant principals
sfhbballnut

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Paulicus wrote:Wow that's more than expected.. I take it this isn't realistic

No it isn't realistic
sfhbballnut

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sfhbballnut wrote:I believe you need to know class size

nice catch. i edited the first post.
each class has 25 students in it.
4 and 7 are not the answers

wcaclimbing

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8 assistant principals.

Kupo666

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yes

Easy one:
if Billy can paint a house in 6 hours and Bob can paint a house in 10 hours, how long will it take them to paint a house if they work together?

wcaclimbing

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three and a half hours I think, I'm trying to do it in my head because I'm to lazy to work it out, I based 7 off of 30 member classes
sfhbballnut

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Three and three fourths hours.

Kupo666

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ah I was close in guessing well done
sfhbballnut

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new question:

prove that 0.999999999 repeated equals one
(there are two ways to do this. if you know both, post both. if you know one, post it and someone else will post the other way)

wcaclimbing

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it equals 0.99999999 repeating, so how does it equal one? unless when you plug it in the calculator it comes out as one, this should be interesting
sfhbballnut

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no sfh just because the calculator says it equals 1 doesnt mean it does.

here is the first solution:

make x=.9999999999....

first multiply x by ten = 9.9999999999 (10x=9.999999.....)
then subtract x =9.000000 (9x=9.0000000)

then with simple algebra, solve 9x=9.

since x=.99999.... , .99999... = 1

now does anyone know the other solution?

wcaclimbing

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9.999999.....minus 9.0 isn't 9? did I miss something? that doesn't work
sfhbballnut

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we went over this in alegbra but i forgot... damn. ill ask my chinese friend. he knows like... everything about math.
Vita sine honore vivere not est.

Skittlesandmnms

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you've surpassed yourself, this is the stupidest post yet
sfhbballnut

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no this is.
Vita sine honore vivere not est.

Skittlesandmnms

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Location: Pyongyang
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Just round it. 9 rounds up, causing the 9 in front to become 10, causing the 9 in front to again become 10, and so on until it rounds out to 1. Anyway, could I post some of my own? They're not math problems, but they're still riddles.

Kupo666

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Sure that's how wcaclimbing started to... I'm still keeping score.
Knowledge is Power
Timing is everything

Paulicus

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Joined: Sun Nov 05, 2006 10:43 am
Location: British Columbia

There is a town that wishes to expand their fountain to twice it's size, but there's a problem. The fountain is square, and arranged with a tree at each corner. The town doesn't want to pay to have the trees removed,so how can they double the fountain's size, while removing the least amount of trees?

Kupo666

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