Venn diagram

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May 26th, 2016 at 5:24:14 AM permalink
Fleastiff
Member since: Oct 27, 2012
Threads: 62
Posts: 7831
X is next to the diagonal line in the upper right quadrant of the circle.
May 26th, 2016 at 6:54:23 AM permalink
TheCesspit
Member since: Oct 24, 2012
Threads: 23
Posts: 1929
About ten seconds. I think I'd seen it before.

On x....

10
It is said that your life flashes before your eyes just before you die.... it's called Life
May 26th, 2016 at 8:51:50 AM permalink
Pacomartin
Member since: Oct 24, 2012
Threads: 1068
Posts: 12569
Quote: TheCesspit
On x....


Right again. I saw a variant of this one on a Mensa exam. How long to do this calculation?

Here is one from acoustics. Given that log is base 10, and log(2)~.3 and a decibel is defined as 10*log(I) where I is acoustic intensity. Answer the following without a calculator. How much of an increase is there in decibels if you have 10x the intensity? If you have double the intensity? Half the intensity? Eight times the intensity?
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