Question 3008 – Research Aptitude
March 31, 2024Question 8210 – Operating-Systems
April 1, 2024GATE 1997
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Question 1
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The probability that it will rain today is 0.5. The probability that it will rain tomorrow is 0.6. The probability that it will rain either today or tomorrow is 0.7. What is the probability that it will rain today and tomorrow?
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0.3
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0.25
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0.35
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0.4
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Question 1 Explanation:
P(Today) = 0.5
P(Tomorrow) = 0.6
P(T∪To) = 0.7
P(T∩To) = P(T) + P(To) – P(T∪To)
= 0.5 + 0.6 – 0.07
= 1.1 – 0.7
= 0.4
Correct Answer: D
Question 1 Explanation:
P(Today) = 0.5
P(Tomorrow) = 0.6
P(T∪To) = 0.7
P(T∩To) = P(T) + P(To) – P(T∪To)
= 0.5 + 0.6 – 0.07
= 1.1 – 0.7
= 0.4