Question

Juan met a girl in a meeting that he liked very much, on that occasion she
provided your phone number. He wants to talk to her so he can visit her, however he lost
the slip of paper where you wrote down your data and only remember the first four digits and that the last
four digits are different from each other. If he decides to randomly press the last 4 digits on his
phone. What is the probability that you will hit the phone number of your new friend?

Answer 1

Therefore probability that he will hit the phone number is 0.000198