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GATE | Sudo GATE 2020 Mock I (27 December 2019) | Question 5

  • Last Updated : 19 Dec, 2019

There are 6 blue marbles, 3 red marbles, and 5 yellow marbles in a bag. What is the probability of selecting a blue or red marble on the first draw ?
(A) 1/3
(B) 4/7
(C) 9/14
(D) 11/14

Answer: (C)

Explanation: There are 6 blue marbles and 3 red marbles for a total of 9 desired outcomes.
Add the total number of marbles to get the total number of possible outcomes, 14.
The probability that a red or blue marble will be selected is 9/14.

Option (C) is correct.

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