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CBSE Class 10 Standard Math 2026 All Sets Solved Paper
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Question : 20 of 20
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Assertion (A) : If probability of happening of an event is 0.2p, p > 0, then p can’t be more than 5.Reason (R) : P(E) = 1 − P(E) for an event E.
Solution:
Probability of any event E always lies between 0 and 1 inclusive .The sum of probability of occurrence and non-occurrence of an event is 1.Assertion (A): Given P(E) = 0.2p.Since P(E) 1:So, p cannot be more than 5. (A) is trueReason (R): It is a fundamental property of probability that . (R) is true.Connection: While both are true, the reason for p 5 is the definition of the range of probability , not specifically the formula for the complement event. Thus, (R) is not the explanation for (A).Both (A) and (R) are true, but (R) is not the correct explanation of (A).
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