There are 20 tickets numbered as 1, 2, 3, ...., 20 respectively. One ticket is drawn at random. Then, which of the following is the probability that the number on the ticket drawn is a multiple of 5?

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14

15

25

310

answer is B.

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Detailed Solution

Given that,
There are 20 tickets numbered as 1, 2, 3, ...., 20 respectively. One ticket is drawn at random.
We need to find the probability that the number on the ticket drawn is a multiple of 5.
We know that,

Probability = Favourable outcomes Total outcomes

The multiples of 5 between 1 and 20 is,

5, 10, 15, 20.

Therefore, favourable outcomes = 4.
Total outcomes = 20.
Then, the probability getting a multiple of 5 is,

= 420 = 15

Hence, the probability getting a multiple of 5 is

15

.
Therefore, option 2 is correct.

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