Three numbers are chosen at random from numbers 1 to 30. Write the probability that the chosen number are consecutive.

Three numbers are chosen at random from numbers 1to 30.Write the probability that the chosen number are consecutive.

Three numbers are chosen at random from numbers 1 to 30. The probability that the minimum of the chosen numbers is 9 and maximum is 25, is

One number is chosen at random from the numbers 1 to 21. What is the probability that it is prime?

Three numbers are chosen at random from 1 to 15. The probability that they are consecutive is

Three numbers are chosen at random from 1 to 20 .The probability that they are consecutive is

One number is chosen at random from the number 1 to 100. Find the probability that it is divisible by 4 or 10.

A number is chosen at random from the numbers 20 to 50. What is the probability that the number chosen is a multiple of 3 or 5 or 7 ?

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.