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7 December, 04:59

A sock drawer contains 18 blue socks and 10 black socks. If two socks are randomly drawn from the drawer without replacement, what is the probability that two black socks are chosen

A. 10/189

B. 5/42

C. 45/392

D. 25/196

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Answers (1)
  1. 7 December, 08:29
    0
    total socks 10 + 18 = 28

    1st draw = 10/28 = 5/14

    2nd draw = 9/27 = 1/3 (no replacement)

    5/14 * 1/3 = 5/42

    Choice B
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