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Practice Test/Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Probability" are available for CBSE Class 10 Mathematics (Maths) and have been compiled as per the syllabus of CBSE Class 10 Mathematics (Maths)
Q. If A be the event such that P(A) =2/5, then P(not A) is equal to
- a)3/5
- b)4/5
- c)1/5
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Practice Test/Quiz or MCQ (Multiple Choice Questions) with Solutions o...
We know Probability law which is law of complement
Which is P(not A)=1-P(A)
Where P(A)=⅖
P(not A)=1-⅖=3/5
Which is P(not A)=1-P(A)
Where P(A)=⅖
P(not A)=1-⅖=3/5
Most Upvoted Answer
Practice Test/Quiz or MCQ (Multiple Choice Questions) with Solutions o...
For calculating probability
=>( possible no of out come) /( total no. of trial)
Hence P{ of getting (not A) } = (5-2) / 5
=} 3/5
That's all
=>( possible no of out come) /( total no. of trial)
Hence P{ of getting (not A) } = (5-2) / 5
=} 3/5
That's all
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Solution:
Probability of an event happening is always less than or equal to 1. Therefore, probability of an event not happening is always greater than or equal to 0.
Given, P(A) = 2/5
We know that P(not A) + P(A) = 1
Therefore, P(not A) = 1 - P(A) = 1 - 2/5 = 3/5
Therefore, the correct answer is option 'A', i.e., 3/5.
Probability of an event happening is always less than or equal to 1. Therefore, probability of an event not happening is always greater than or equal to 0.
Given, P(A) = 2/5
We know that P(not A) + P(A) = 1
Therefore, P(not A) = 1 - P(A) = 1 - 2/5 = 3/5
Therefore, the correct answer is option 'A', i.e., 3/5.
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Practice Test/Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Probability" are available for CBSE Class 10 Mathematics (Maths) and have been compiled as per the syllabus of CBSE Class 10 Mathematics (Maths)Q. If A be the event such that P(A) =2/5, then P(not A) is equal toa)3/5b)4/5c)1/5d)None of theseCorrect answer is option 'A'. Can you explain this answer?
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