Try this beautiful Problem based on Counting Principle from Math Kangaroo (Ecolier) 2017 Problem 22. You may use sequential hints to solve it.

Try this beautiful Problem based on Counting from AMC 8 2020 Problem 7. You may use sequential hints to solve it.

Try this beautiful Problem based on Divisibility Problem from AMC 2020 Problem 6. You may use sequential hints to solve it.

Try this beautiful Problem based on Factorizing Problem from AMC 2021 Problem 9. You may use sequential hints to solve it.

Try this beautiful problem based on cube from AMC 8, 2020 Problem 9. You may use sequential hints to solve it.

Try this beautiful Problem based on Enumeration from AMC 10A 2021, Problem 20. You may use sequential hints to solve it.