document.write( "Question 912984: 10 girls are in a class. 3 have blue eyes. If 2 girls are chosen at random, what is the probability that: a) they both have blue eyes b)neither have blue eyes c) at least one has blue eyes. I know the answers (they are provided) I just don't know how to GET to the answer... \n" ); document.write( "
Algebra.Com's Answer #554234 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
10 girls: 3B, 7(not blue)
\n" ); document.write( "choose 2
\n" ); document.write( "a) P(both) = \"3C2%2F%2810C2%29\" 0r \"%283%2F10%29%282%2F9%29\" = 1/15
\n" ); document.write( "b) P(neither) = \"7C2%2F%2810C2%29\" 0r = \"%287%2F10%29%286%2F9%29\" = 7/15
\n" ); document.write( "c) P(at least 1) = 1 - P(none) = 1 - (b) = 1- 7/15
\n" ); document.write( "
\n" );