Question 1037756: You have 18 pairs of socks in your drawer, of which 4 are black, 4 are brown and 10 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?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website!
You have 18 pairs of socks in your drawer, of which 4 are black, 4 are brown and 10 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?
----
# of black pairs = 4C2 = (4*3)/(1*2) = 6
---
# of random pairs:: 18C2 = (18*17)/(1*2) = 153
----
P(not get black pair) = 1 - 6/153 = 147/153
-----------
Cheers,
Stan H.
--------------
|
|
|
