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Mathematics
A bag contains 3 white, 4 black, 2 red balls. If 2 balls are drawn at random, then the probability that both the balls are white, is
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Q. A bag contains $3$ white, $4$ black, $2$ red balls. If $2$ balls are drawn at random, then the probability that both the balls are white, is
COMEDK
COMEDK 2015
Probability
A
$\frac{1}{18}$
18%
B
$\frac{1}{36}$
28%
C
$\frac{1}{12}$
39%
D
$\frac{1}{24}$
16%
Solution:
Total number of balls = 9
Probability of drawn two white balls
$ = \frac{3}{9} \times \frac{2}{8} = \frac{1}{12} $