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

What is the probability that a number selected from the numbers 1,2,3….25 is prime number when each of the given numbers is equally likely to be selected?

What is the probability that a number selected at random from, 1, 2, 3,...., 100 has a digit 4?

A box contains 15 balls numbered 1 to 15. Find the probability that a ball selected at random would bear a number that is a multiple of 3 or 5.

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?

Number 1, 2, 3, ...100 are written down on each of the cards A, B, and C. One number is selected at random from each of the cards. Then find the probability that the numbers so selected can be the measures (in cm) of three sides of right-angled triangles, no two of which are similar.

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 ?

There unbiased dice are thrown at a time . What is the probability that the number 1 appears at lest once? Given that the number on the first die is 3. What is the probability that the sum of the numbers on the three dice is odd?

From 100 tickets numbered 1, 2,3.. ..... 100.four are drawn at random. What is the probability that 2 of them will bear numbers from1 to 40 and the other 2 will- bear any number from 41 to 100?

Suppose we throw a die once. (1) What is the probability of getting a number greater than 4? (in) What is the probability of getting a number less than or equal to 4?

A number is chosen at random from the numbers 1, 2,…, 15. find the probability that the chosen number is (i) even (ii) odd and (iii) multiple of 3.