Middle School Madness - June 29, 2020
You have a box of counting numbers from 1 to 10 (inclusive). You select one number from the box and place it back in the box. You repeat this process by picking a number again. How many possible pairs of numbers that can be selected sum to a prime number? It is important to note that picking a 2 first and 3 second is a different pair from picking a 3 first and 2 second.
Immediately after your correct answer is submitted, your name will be posted here.
NOTE: Anyone can answer Middle School Madness questions, but only participants 15 years of age or younger will be awarded points and displayed in the rankings.
Need Scratch Paper?
We encourage you to use the free online math software and mobile app from ClassPad as your digital scratch paper while solving the problems on our site!