A box contains 4 red balls and 6 black balls. Three balls are selected randomly

Question

A box contains 4 red balls and 6 black balls. Three balls are selected randomly from the box one
after another, without replacement. The probability that the selected set contains one red ball and
two black balls is

Options:

A . 1/20

B . 1/12

C . 3/10

D . 1/2

Answer: Option D

-NA-

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