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.

Problerm 1416

Posted: September 9, 2025

85 % of users got this correct

A 5-digit number is chosen at random from all 5-digit numbers that contain each of the digits 1, 2, 3, 4, and 5 exactly once (such as 12345 or 13245).  What is the probability that the chosen number contains the 2-digit block 12?

Login to Answer
View Past Problems

Individual Rankings

The first 10 to correctly answer this question are shown below.

View All Individual Rankings

Leaderboard Rankings

The 10 top-ranked leaderboards for this question are shown below.

View All Leaderboard Rankings

Recent attempts