Pairs of Primes
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.
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