Posted by math on Sunday, April 24, 2011 at 6:05pm.
Mrs. Baker has to choose 2 students to lead the class field trip. If she draws from a list of 6 boys and 6 girls, what is the probability that 2 girls will be drawn?
(Please Help!)
A.1/7
B.5/24
C.5/22
D.5/6

layla  bobpursley, Sunday, April 24, 2011 at 6:08pm
Pr= 6/12*5/11= ?

layla  Loui, Sunday, April 24, 2011 at 6:09pm
Any 2 of 12 is (12 x 11)/2 = 66. Any 2 from 6 is (6 x 5)/2 = 15 so the probability is 15 out of 66 ie 0.227 or 22.7%
Loui 
layla  math, Sunday, April 24, 2011 at 6:13pm
thank you have a nice easter or rest of your weekend