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For two events, P(A) = 0.54, P(B) = 0.69 and P(A and B) = 0.35. The probability that A occurs but B does not is:
A0.15 exactly
B0.34 exactly
C0.23 exactly
D0.19 exactly
Answer & Solution
Correct answer: D. 0.19 exactly
1. A-but-not-B is the part of A outside the overlap with B.
2. P(A but not B) = P(A) - P(A and B).
3. P = 0.54 - 0.35 = 0.19.
_Source: NCERT Class 11 Mathematics, Ch 14 'Probability' (kemh114)_
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