I had one of those for my current job. Number sequences are pretty easy, though. Although the bulk of my test was Raven's Progressive Matrices, which are also easy.
https://en.m.wikipedia.org/wiki/Rave...ssive_Matrices
I had one of those for my current job. Number sequences are pretty easy, though. Although the bulk of my test was Raven's Progressive Matrices, which are also easy.
https://en.m.wikipedia.org/wiki/Rave...ssive_Matrices
The reason a dog has so many friends is that he wags his tail instead of his tongue. - Acadian proverb
Rugevit (2015-07-26)
Here is puzzle like inequality exercise from school program for all interested to try
Prove that х^12 - x^9 + x^6 - x^3 + 1 > 0 for all real x > 0
The inequality can be written as x^12 + x^6 + 1 > x^9 + x^3 for x > 0 for x is real.
For 1 > x > 0:
x^12 < x^9 < 1 and x^6 < x^3 < 1 which means x^12 + x^6 < x^9 + x^3 < 1
which also means that adding 1 to either of both sides makes its value always higher than the other so
x^12 + x^6 + 1 > x^9 + x^3
For x >= 1:
x^12 > x^9 and x^6 > x^3 so x^12 + x^6 > x^9 + x^3 so evidently
x^12 + x^6 + 1 > x^9 + x^3
Q.E.D.
Luckily it's still at mid-high school level.
Last edited by Danielion; 2015-07-26 at 21:02.
"Political correctness is the (...) revenge of the (...) intolerant, (...) dunce upon all the liveliness in this world. It is no more than the (...) resort of minds (...) that, for them, a revival of Stalinism is preferable to the pain of a glimpse of self-it's the last sigh of the beast that Nietzsche identified as ressentiment."
Rugevit (2015-07-26)
I misread your math question. But yeah to get back to this... these tests actually are not to measure IQ or anything, they're to see if you're capable of working under pressure. They have impossible time limits and built to observe if you get too stressed and give up, or keep on trucking. It's impossible to get them all correct in the time limit, so it's best to just do the easy ones and take a guess at the hard ones.
These tests are trolling you, pretty much. So yeah, I guess it's disrespectful.
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You work in IT, you never learned how to "cheat" on multiple choice tests that are required for certifications? Well, not really cheating, just tips on how to eliminate wrong answers from the choices when you don't know the answer.
Multiple choice usually works like this.
1. Two that make absolutely no sense
2. One to trick you
3. The correct answer
This is one I didn't know and got correct using this method:
45. In quantum mechanics, the physical constant used to describe the sizes of quanta – denoted as h – is named after what German physicist?
1. Albert Einstein and Erwin Schrodinger just make no sense - not them, also Schrodinger was Austrian, not German
2. Werner Heisenberg is the one to trick you, his surname starts with H - not him
3. The correct answer is Max Planck.
Last edited by DragonRouge; 2015-07-26 at 22:03.
The reason a dog has so many friends is that he wags his tail instead of his tongue. - Acadian proverb
Well done!
There are many solutions to the problem. One possible solution is to use the summing of geometric series. Geometric series are still being taught in schools?
So, х^12 - x^9 + x^6 - x^3 + 1 is sum of a geometric series with the coefficient -x^3. Therefore, х^12 - x^9 + x^6 - x^3 + 1 = (x^15+1)/(x^3+1) > 0 for all real x >0
Alternatively, one may do some curly algebra re-writing х^12 - x^9 + x^6 - x^3 + 1 as (x^6-x^3 +1)^2 + (x^3)(x^3-1)^2 > 0 for all real x > 0
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Let's make the problem a bit more difficult proving that х^12 - x^9 + x^6 - x^3 + 1 >0 for all real x.
"Political correctness is the (...) revenge of the (...) intolerant, (...) dunce upon all the liveliness in this world. It is no more than the (...) resort of minds (...) that, for them, a revival of Stalinism is preferable to the pain of a glimpse of self-it's the last sigh of the beast that Nietzsche identified as ressentiment."
I think I would have got an ever higher score if the test had been in swedish, since there were a couple of unusual words I didn't understand.
But I do know the english names for most chemical element.
Fun fact: I think Brimstone is a cooler name than Sulfur (in swedish Svavel). Brimstone is the Biblical name for Sulfur, as I allready knew and what was asked in the test.
The Future was better before
DragonRouge (2015-07-26)
Danielion (2015-07-26)