Problem 1474
If
1 @ 2 = -3
2 @ 3 = -2
3 @ 4 = 1
7 @ 12 = 25
13 @ 23 = 123
Find -9 @ 11.
Login to Answer
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.
Login to Answer
Individual Rankings
The first 10 to correctly answer this question are shown below.
- Khalil Dagher
- Mario Skrtic
- James Duffy
- Jerrold Greenberg
- Patrick Costello
- Bassel Baker
- Mike Schieffer
- Manoj Kumar
- Raymond Chrisman
- Peter Phipps
Leaderboard Rankings
The 10 top-ranked leaderboards for this question are shown below.
View All Leaderboard Rankings