16 February 2018

• 15:0115:01, 16 February 2018 diff hist −427 2018 AMC 12B Problems/Problem 19 same problem redirect current
• 13:3513:35, 16 February 2018 diff hist +507 N 2018 AMC 10B Problems/Problem 23 Created page with "23. How many ordered pairs <math>(a, b)</math> of positive integers satisfy the equation <cmath>a\cdot b + 63 = 20\cdot \text{lcm}(a, b) + 12\cdot\text{gcd}(a,b),</cmath> whe..."