a box contains20 cards numbered from1-20.a card is drawn from the box at random. find the probability that the number in the drawn card is (1) even,(2) multiple of three
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Total number of cards = 20
(1) Card is even
Favourable outcomes = 10
So, Probability = 10/20 = 1/2
(2) Multiple of three
Favourable outcomes = 6
Probability = 6/20 = 3/10
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- Probability = Favourable outcomes/Total number of outcomes.
- P(E) + P(not E) = 1
- Probability can only be less than equal to 1 and more than equal to 0.
- If Probability is 1, then it is sure event.
- If Probability is 0, then it is impossible event.
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