A bag contains tickets numbered 11, 12, 13,..., 30. A ticket is taken out from the bag at random.
A bag contains tickets numbered 11, 12, 13,..., 30. A ticket is taken out from the bag at random. Find the probability that the number on the drawn ticket
(i) is a multiple of 7
(ii) is greater than 15 and a multiple of 5.
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Total no. of possible outcomes = 20 {11, 12, 13, ….., 30}
(i) E ⟶ event of getting no. which is multiple of 7
No. of favorable outcomes = 3 {14, 21, 28}
Probability, P(E) = (No.of favorable outcomes)/(Total no.of possible outcomes)
P(E) = 3/20
(ii) E ⟶ event of getting no. greater than 15 & multiple of 5
No. of favorable outcomes = 3 {14, 21, 28}
P(E) = 3/20
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