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Probability — Mathematics STD 10 — Question

ICSE BoardEnglish MediumSTD 10MathematicsProbability1 Mark
Question
If A and B are two complementary events then what is the relation between P(A) and P(B)?
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Answer

Two complementary events, taken together, include all the outcomes for an experiment and the sum of the probabilities of all outcomes is 1.
P(A) + P(B) = 1

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