3 distinct integers are selected at random form 1, 2, 3, …, 20. find out the probability that the sum is divisible by 5

Out of 3n consecutive integers, three are selected at random. Find the probability that their sum is divisible by 3.

The integer is selected at random from 1 to 25. The probability that it is a prime number is

A die is tossed. The probability that the number on a die is divisible by 3 is …….

Two non negative integers are chosen at random. The probability that the sum of the square is divisible by 10, is

Without repetition of the number, two digit numbers are formed with the numbers 1, 2, 3, 4, 5. The probability that such a number is divisible by 4 is ......

Three different numbers are selected at random from the set A = (1, 2, 3,...., 10). The probability that the product of two of the numbers is equal to the third is

A positive integer N is selected so as to be 100ltNlt200. Then, the probability that it is divisible by 4 or 7, is

A five digit number is formed by the digits 1, 2, 3, 4, 5 without repetition. Find the probability that the number is divisible by 4.

One ticket is selected at random from 50 tickets numbered 00, 01, 02, ... , 49. Then the probability that the sum of the digits on the selected ticket is 8, given that the product of these digits is zero, equals (1) 1/14 (2) 1/7 (3) 5/14 (4) 1/50

The digits 1, 2, 3, 4, 5, 6, 7, 8, and 9 are written in random order to form a nine digit number.Let p be the probability that this number is divisible by 36, find 9p.