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

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

An integer is chosen between 0 and 100. what is the probability that it is divisible by 10?

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

A positive integer is chosen at random . The probability that sum of the digits of its square is 33 is :

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 month is selected at random in a year. Find the probability that it is a month beginning with the letter 'J'.

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.