arivalen
23.07.2019 •
Mathematics
Adrawer contains 12 brown socks and 12 black socks, all unmatched. a man takes socks out at random in the dark. the least number of socks that he must take out to be sure that he has at least two socks of the same color is
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Ответ:
B) 14 - It's highly unlikely yet possible to remove all brown socks first, the next two would have to be black.
Ответ:
3x*2+2 * x-8
3x^2*2+10 * 2
=6x^2*4+20