CMI 2019
November 6, 2024Analogical-Reasoning
November 8, 2024Probability
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Question 4
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A bag contains 10 white balls and 15 black balls. Two balls are drawn in succession. The probability that one of them is black and the other is white is:
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2/3
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4/5
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1/2
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2/1
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Question 4 Explanation:
Probability of first ball white and second one black is,
Probability of first ball black and second one white is,
Probability of first ball black and second one white is,
Correct Answer: C
Question 4 Explanation:
Probability of first ball white and second one black is,
Probability of first ball black and second one white is,
Probability of first ball black and second one white is,