Tickets numbered from 1 to 20 are mixed up and a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 7?

What is the probability that a number selected from the numbers 1, 2, 3…… 15 is a multiple of 4 ?

In a lottery of 50 tickets numbered 1 to 50, one ticket is drawn. Find the probability that the drawn ticket bears a prime number.

A number is chosen at random among the first 120 natural numbers. What is the probability that the number chosen being a multiple of 5 or 15 ?

From set of 1000 cards serially numbered 1,2,3….1000 one card is drawn at random find the probability that the number found is a multiple of 12 and 18

An um contains 30 tickets numbered 1 to 30 two tickets are drawn at random the probability that both the numbers are prime is

The box contains tickets numbered from 1 to 20. Three tickets are drawn from the box with replacement. The probability that the largest number on the tickets is 7 is a. 2//19 b. 7//20 c. 1-(7//20)^3 d. none of these

If from the numbers 1,2,3… 30 three are drawn at randomm find the probability that they are in G.P.

Out of 21 tickets marked with numbers , from 1 to 21 , three are drawn at random, find the probability that the three numbers on them are in A.P.

From 20 cards marked with the 1st 20 natural numbers.one is drawn at random ,find the probability that it is a)prime number b) multiple of 5.

A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is red?