A

332

Q. Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

Explanation:

Here, S = {1, 2, 3, 4, ...., 19, 20}. Let E = event of getting a multiple of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}. P(E) = n(E)/n(S) = 9/20.

You must be Logged in to update hint/solution

Q. A is 16 years older than B. But half the age of B is equal to 1/3 of A’s age. Find their prese...

Q. A clock is started at noon. By 10 minutes past 5, the hour hand has turned through

Q. What is the number nearest to 8000 which is completely divisible by 45?

Q. If 75% of a number is added to 75, then the result is the number itself. The number is

Q. What is to be added to 15% of 160 so that sum may be equal to 25% of 240 ?

## Discusssion

Login to discuss.