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Which shows the probability of choosing 2 white socks from a drawer having 6 white 3 black socks 3 brown socks and 8 gray socks?
Wiki User
∙ 13y ago
I assume you are selecting two socks (one at a time) from the drawer to wear (for example).
There are 6 white + 3 black + 3 brown + 8 gray = 20 socks in all
So the probability that the first sock chosen to be white is 6/20 since there are 6 socks and 20 socks in total. 6/20 reduces down to 3/10.
The probability that the second sock chosen is also white is 5/19 since there are now only 5 white socks left to be chosen and 19 socks in total (since one sock has been taken out).
Thus the probability of both socks being white is:
probability = 3/10 x 5/19
= 3/38
Wiki User
∙ 13y ago
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