What is the probability that the program selects 5 as the first number and 7 as the second number?

Question

You created a computer program that randomly selected a number from 1 to 20. You run the program two times.

Answer 1

Here's how to do a similar problem.  If you roll a 6 sided die you will get a random number from 1 to 6.  The probability of getting any specified number from 1 to 6 is 1/6.  So the probability of rolling a 3 and then rolling a 5 is given by  

 

P(3,5) = P(3)*P(5) = (1/6)*(1/6) = 1/36  

 

Does this help?