Brain Teasers
Quocorrian Math 2
After being intrigued by Quocorria's mathematical systems, you decide to extend your stay on this mathematically advanced planet.
While talking to a Quocorrian professor, he mentions Quocorria's other numbering systems. Your curiosity gets the best of you, so you decide you won't leave Quocorria until you master all of their systems.
The professor gives you a piece of paper with four true math problems on it. Like before, you must discover the system.
Note: This is a different system than last time
Here are the problems:
2+2=12
5-3=62
3x4=61
6/3=83
So, using this system, what is 1-3?
While talking to a Quocorrian professor, he mentions Quocorria's other numbering systems. Your curiosity gets the best of you, so you decide you won't leave Quocorria until you master all of their systems.
The professor gives you a piece of paper with four true math problems on it. Like before, you must discover the system.
Note: This is a different system than last time
Here are the problems:
2+2=12
5-3=62
3x4=61
6/3=83
So, using this system, what is 1-3?
Hint
Again, this is not an actual number system (decimal, binary, hexadecimal) but a variation on the way we do math.Answer
18.In this system, you multiply each number by -1, changing it to its opposite. Then, do the operation normally. Then, add the two numbers together and square it. Add that to the original.
For all you equation people...
-a*-b+(a+b)^2
With the * being the indicated operation.
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Comments
strange but good
I came up with a different solution: [(a+b)^2] (+ or -, see note below) a*b
use '-' if the indicated operation is addition or subtraction
use '+' if the indicated operation is mult. or division)
* is the intended op.
use '-' if the indicated operation is addition or subtraction
use '+' if the indicated operation is mult. or division)
* is the intended op.
Mar 06, 2005
not a very good one. kind of confusing; i got 22 for 1-3. added 1 to the first number and subtracted one from the second number and put them together for 22.
After nearly solving your first teaser, I found this one quite easy. As usual when someone posts an "alternate solution" rather than admit they couldn't solve the problem, the "alternate" is flawed. Nice try, though.
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