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 3 n consecutive integers, three are selected at random. Find the probability that their sum 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

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

Three numbers are chosen at random without replacement from {1, 2, 3, …, 10}. Find the probability that the smallest of the chosen numbers is 3, or the greatest one is 7.

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 writing the digits 1,2,3,4,5 in a random order without repetition. Then the probability that the number is divisible by 4 is

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.

A number x is selected at random from the numbers 1,2,3, and 4. another number y is selected at random from numbers 1,4,9, and 16. find the probability that product of x and y is less than 16.

One number card is choosen randomly from the number cards 1 to 25. Find the probability that it is divisible by 3 or 11.

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears a number divisible by 5.