Event Not Occurring

Question

You have 19 pairs of socks in your drawer, of which 4 are black, 9 are brown and 6 are white.
If you have to reach into the drawer in the dark and pick a pair of socks, what is the probability that you won't get a black pair?

=%(Round to one decimal place.)

Answer 1

There are 19 pairs all together, of which 4 are black, so 15 are not black.  Therefore the probability of not picking a black pair in one attempt is 15/19 = 78.9%