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Additionally.... I get 6 combinations of Equal girl boy: BBGG GGBB BGBG GBGB BGGB GBBG And 8 combinations of Unequal Girl Boy....remember only 3 girls and boys, so the combination has a limit: BBBG BBGB BGBB GBBB GGGB GGBG GBGG BGGG My problem is that my answer is 6/14 or 3/7 which isn't even an opt...
- by cmoney
Sun Oct 19, 2008 5:58 pm- Forum: Problem Solving
- Topic: Difficult GMAT prep problems
- Replies: 9
- Views: 2741
Good reply, but I don't think that the math for the Boy Girl problem is correct. There are only 6 combinations of Boys and Girls that is equal.
BBGG
GGBB
BGBG
GBGB
BGGB
GBBG
correct me if I'm wrong.
- by cmoney
Sun Oct 19, 2008 5:52 pm- Forum: Problem Solving
- Topic: Difficult GMAT prep problems
- Replies: 9
- Views: 2741
Agreed, I tripped up on this question because of the poor wording. Though it might be correct grammar, it's not helpful. A better way of looking at it would be that
"A full box of varnish weighs ten times as much as an empty one."
- by cmoney
Sun Oct 19, 2008 12:07 pm- Forum: Problem Solving
- Topic: A box of varnish
- Replies: 5
- Views: 1635
I think that the point is that to make a triangle, the the points need to exist on different values. An example would be a triangle where the base points are the same...this creates a line, so it's impossible. Sine R cannot have the same value as P, you have subtract one from the possible locations....
- by cmoney
Sun Oct 19, 2008 11:46 am- Forum: Problem Solving
- Topic: how many triangles?
- Replies: 29
- Views: 25779