Daily Math Challenge

Sharpen your math skills with a new problem every Tuesday to Friday. These daily challenges are perfect for those who enjoy quick, engaging puzzles.

Problem 1291

Posted: February 4, 2025

61 % of users got this correct

Consider the positive integers from 1 – 11 inclusive. These 11 numbers are in a jar. You select one number from the jar and place it back in the jar. 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 3 first and 8 second is a different pair from picking an 8 first and 3 second.

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