Two balls are drawn at random from a bag containing 5 black balls and 3 white balls. If the random variable $X$ denotes the number of white balls drawn, then the mean of $X$ is
- A
$\frac{1}{2}$
- B
$\frac{5}{8}$
- C
$\frac{3}{4}$
- D
$\frac{3}{8}$
✓ Correct answer: C
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