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

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

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

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

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

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

Out of (2n+1) tickets consecutively numbered, three are drawn at random. Find the chance that the numbers on them are in AP.

Activity: Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3.

A book contains 1000 pages. A page is chosen at random. Find the probability that the sum of the digits of the marked number on the page is equal to 9.

Three numbers are chosedn from 1 to 20 . Find the probability that they are not consecutive

Find the sum of all three digit natural numbers divisible by 7