In a box, there are 4 black balls and 6 white balls. If t...

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PS · Problem Solving

555-605

Probability

In a box, there are 4 black balls and 6 white balls. If two balls are selected at random, what is the probability that at least one of them is black?

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A

1/15

B

8/30

C

2/3

D

9/15

E

26/30

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Explanation

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