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Question

A bucket contains 10 brown balls, 8 green balls, and 12 red balls and you pick one without looking. What is the probability that the ball will be brown? 



Your Answer
A

415

Correct Answer
B

13

Your Answer
C

23

Your Answer
D

12


Solution

The correct option is B

13


The total number of possible outcomes = Total number of balls

                                                               = 10 + 8 + 12

                                                               = 30

Number of favourable outcomes = Number of brown balls

                                                    = 10

 Probability of getting a brown ball = Number of favourable outcomes total number of possible outcomes

                                                          = 1030

                                                          = 13

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