Test: GMAT Math

Data sufficiency question- do not actually solve the question

1.

A bag of marbles consist of a mixture of black and red marbles. What is the probability of choosing a red marble followed by a black marble?

1. The probability of choosing a black marble first is \small \frac{1}{3}.

2. There are 10 black marbles in the bag.

Statement 1 alone is sufficient, but statement 2 alone is not sufficient to answer the question

Each statement alone is sufficient to answer the question

Statements 1 and 2 together are not sufficient, and additional information is necessary to answer the question

Both statements taken together are sufficient to answer the question, but neither statement alone is sufficient

Statement 2 alone is sufficient, but statement 1 alone is not sufficient to answer the question

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