Thread: Choosing Random Integer

Each of four students chooses at random one integer from 1 to 10 inclusive. What is the probability that at least 2 of them choose the same integer?

Please help!

Originally Posted by sweeetcaroline

Each of four students chooses at random one integer from 1 to 10 inclusive. What is the probability that at least 2 of them choose the same integer?

Do you understand that there are ways to choose the integers?

Let's find the number of ways that no two of the same integers are chosen.
That number is . WHY?

Then what is the number in which at least two of the same are chosen?