Math Puzzle
 

Re: Math Puzzle
 

i got to stage 2, realized i needed a calculator and stopped. call me lazy i guess

Re: Math Puzzle
 

no calc for stage 2 but you'd need one for later.

Re: Math Puzzle
 

Well, that's too much for a Thursday morning that I'm off :P I would need to dig quite far in my brain to solve Stage 7

Re: Math Puzzle
 

But, you were so close to the end. And, stage 8 doesn't require a calculator.

Re: Math Puzzle
 

I did it all. I found the typos and errors quite frustrating. For example, in the square problem, he doesn't define what he means by twice as big, but judging from the answer that works, he meant twice as much area, and not twice as big diagonally across or twice as big a perimeter. This is by no means a standard definition of twice as big in mathematics. Also you have to guess how many significant figures he wants as putting in the wrong number of digits gives incorrect results. This could have been remedied by making all numbers be perfect integers. Poorly designed for a mathematics person if the designer is one.

Re: Math Puzzle
 

i entered the correct answer for stage 2 and then it opened a dead link in a new window. and it kept doing that. so i quit.

Re: Math Puzzle
 

It does that when you enter the incorrect answer...

Re: Math Puzzle
 

Its just a convoluted Pythagorean Theorem question. Now get cracking.

Edit: Corrected a typo

Re: Math Puzzle
 

[ QUOTE ]
I did it all. I found the typos and errors quite frustrating. For example, in the square problem, he doesn't define what he means by twice as big, but judging from the answer that works, he meant twice as much area, and not twice as big diagonally across or twice as big a perimeter. This is by no means a standard definition of twice as big in mathematics. Also you have to guess how many significant figures he wants as putting in the wrong number of digits gives incorrect results. This could have been remedied by making all numbers be perfect integers. Poorly designed for a mathematics person if the designer is one.

[/ QUOTE ]A little poking around shows that the link we were given jumps to the start, while others would have received an instruction that digits after the decimal place were to be ignored.

Re: Math Puzzle
 

Oh well since you told me that it ended at Stage 8 I decided to solve it...that Stage 8 was ummm more physic than math no?

Re: Math Puzzle
 

[ QUOTE ]
It does that when you enter the incorrect answer...

[/ QUOTE ]

Oh well I put in 0 for that one about 100 times before I tried 777.

Mack

Re: Math Puzzle
 

PEMDAS is fun :P I hate those skill question to win a bag of chips or something cheap.

Re: Math Puzzle
 

[ QUOTE ]
PEMDAS

[/ QUOTE ]

I'll probably be sorry but ?

Mack

Re: Math Puzzle
 

Good old order of operation learned in high school
PEMDAS
Parentheses
Exponents
Multiplication and Division
Addition and Subtraction

Re: Math Puzzle
 

Also learned it as:

Please Excuse My Dear Aunt Sally

which is queer, so a much hipper one (if such a thing could be said) is:

Please End My Day At School

Re: Math Puzzle
 

I got held up with problem 7 when I didn't realize the question said "meters" instead of "kilometers" for the amount under the water.

Re: Math Puzzle
 

Was this test designed for anything in particular apart from a bit of fun?

chez

Re: Math Puzzle
 

I am unaware of any purpose, He has similiar puzzles. http://www.etienne.nu/

Re: Math Puzzle
 

[ QUOTE ]
I am unaware of any purpose, He has similiar puzzles. http://www.etienne.nu/

[/ QUOTE ]

I tried to visit IQ-land but failed the entrance exam [img]/images/graemlins/frown.gif[/img]

typo in step 4?
 

step four says:

{[(710^0)/8] + 0,710} * 1000

the first part is 1/8 plus 710, so 710.125. Multiply that by 1000, and it should be 710125, but it opens a blank window.

I'm guessing the 0,710 is a typo. Any help?

Josh

Re: typo in step 4?
 

, means .

chez

Re: typo in step 4?
 

it's supposed to be 0.710 not 0,710.

Re: typo in step 4?
 

I think its some strange european convention

Re: Math Puzzle
 

I couldn't get in either.

Re: typo in step 4?
 

[ QUOTE ]
It is definitely a strange european convention

[/ QUOTE ]

Re: typo in step 4?
 

We use in in Canada as well, it's the way most French write it. Since we are so close to the US though we tend to use both :P

Re: Math Puzzle
 

[ QUOTE ]
Well, that's too much for a Thursday morning that I'm off :P I would need to dig quite far in my brain to solve Stage 7

[/ QUOTE ]

It actually involves no more than the pythagorean theorem. The hardest part is making a diagram, which should look something like (r = radius, x = length of cord):

http://img47.imageshack.us/img47/5123/chord3br.jpg

The part you're looking for is in red. It is the radius minus the length of the missing leg of the right triangle. The length of the missing leg is sqrt(r^2 - 1/4x^2), so the answer is:

r - sqrt(r^2 - 1/4x^2)

Re: Math Puzzle
 

Yeah I know, I've completed it (see post below) after someone said it ended at stage 8 :P I was just lazy.

Re: typo in step 4?
 

[ QUOTE ]
it's supposed to be 0.710 not 0,710.

[/ QUOTE ]

i had the same problem.