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GRE
GRE Quantitative Reasoning Section

Probability of Selecting Two Red Balls

Hard Data Analysis Probability

A bag contains 10 red balls and 5 blue balls. You randomly select two balls from the bag without replacement. What is the probability that both balls selected are red?

Let:

- The number of red balls = 10

- The number of blue balls = 5

- The total number of balls = 10 + 5 = 15

Hint

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