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Question

It is given that the probability of winning a game is 0.7. What is the probability of losing the game?

(a) 0.8

(b) 0.3

(c) 0.35

(d) 0.15


Solution

ANSWER:
(b) 0.3
Explanation:
Let E be the event of winning the game. Then,
P(E) = 0.7
P(not E) = P(losing the game) = 1 − ​ P(E) ⇒ 1 − 0.7 = 0.3

Mathematics
Secondary School Mathematics IX
Standard IX

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