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25 Oct 2007, 07:23
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N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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A bowl contains G and B chips. What is the probability of drawing a B chip in two successive trials (without replacement)?
1. The ratio of B to G is 3:4
2. There are 5 more G than B chips
1. The ratio of B to G is 3:4
2. There are 5 more G than B chips
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Hi there,
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25 Oct 2007, 07:48
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it is C,
1. insuff the final value will depend on amount of chips
2. insuff again info about number of chips is needed
Together suff,
because we can solve for B and G nad find their values which is enough to answer the problem
Ans: C
1. insuff the final value will depend on amount of chips
2. insuff again info about number of chips is needed
Together suff,
because we can solve for B and G nad find their values which is enough to answer the problem
Ans: C
25 Oct 2007, 08:02
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bmwhype2
I like C as well.
Because there are two draws, the ratio can answer the probability of the first draw, but not the second.
Again, B is helpful but no suff. You can have 6:1 ratio or 26 to 21 ratio.
Together, it's 3x+5=4x. solve for x and figure out the probability. and of course, there's no need to get an answer.
