User:MRENTHUSIASM

Introduction

Hi Everyone,

I am a hedgehog who likes Message Board halping, funny pictures, emoji wars, and AoPS Wiki contributions. Keep these fun things coming!

This hedgehog represents my attitude towards math--be enthusiastic and victorious!

~MRENTHUSIASM

Contributions

Below are my contributions to the AMC/AIME Problems' Solutions in the AoPS Wiki. I understand that in this communal Wiki, we all have to collaborate and make compromises. In any of my solutions, if you find flaws and/or want major revisions, please private message me before taking action. I am sure that we will work things out.

Thank you for your cooperation, and hope you enjoy reading my solutions. :)

~MRENTHUSIASM

2021 AMC 10A

Problem 1 (Solution 2)

Problem 2 (Solutions 2, 3, 4)

Problem 3 (Solution 3)

Problem 4 (Solutions 1, 2)

Problem 5 (Solutions 1, 2)

Problem 6 (Solutions 1, 2)

Problem 7 (Solution 2)

Problem 9 (Solution 3)

Problem 11 (Solutions 1, 3)

Problem 12 (Solution 1)

Problem 13 (Solution 2)

Problem 17 (Diagram, Solution 2)

Problem 18 (Solution 4)

Problem 20 (Solution 2)

Problem 22 (Solution 2)

Problem 23 (Solution 3)

Problem 24 (Diagram, Solution 2)

Problem 25 (Solutions 2, 4)

2021 AMC 10B

Problem 6 (Solution 3)

Problem 7 (Solution 2)

Problem 8 (Solution 3)

Problem 16 (Solution 4)

Problem 17 (Solution 3)

2021 AMC 12A

Problem 2 (Solutions 2, 3)

Problem 3: same as AMC 10A Problem 3 (Solution 3)

Problem 4: same as AMC 10A Problem 7 (Solution 2)

Problem 6 (Solutions 2, 3)

Problem 7: same as AMC 10A Problem 9 (Solution 3)

Problem 10: same as AMC 10A Problem 12 (Solution 1)

Problem 11 (Solutions 2, 3, 4)

Problem 13 (Solutions 2, 3)

Problem 14 (Solutions 2, 4)

Problem 15 (Solutions 3, 4)

Problem 17: same as AMC 10A Problem 17 (Diagram, Solution 2)

Problem 18: same as AMC 10A Problem 18 (Solution 4)

Problem 19 (Solutions 2, 3, Remark)

Problem 21 (Solution 2, Remark)

Problem 22 (Solution 4)

Problem 23: same as AMC 10A Problem 23 (Solution 3)

Problem 24 (Solution 1)

Problem 25 (Solution 1)

2021 AMC 12B

Problem 4: same as AMC 10A Problem 6 (Solution 3)

Problem 11 (Solution 4)

Problem 20 (Solution 4)

2021 AIME I

Problem 1 (Solution 1)

Problem 2 (Solution 2)

Problem 3 (Solution 3)

Problem 7 (Remark)

Problem 8 (Solution 3, Remark)

Problem 9 (Diagram, Solution 6)

Problem 10 (Solution 2)

Problem 11 (Solution 4)

2021 AIME II

Problem 1 (Solution 3, Remark)

Problem 2 (Solution 1)

Problem 3 (Solution 2)

Problem 4 (Solution 1)

Problem 5 (Solutions 2, 5)

Problem 6 (Solution 3)

Problem 7 (Solution 4)

Problem 8 (Solution 1)

Problem 9 (Solution 2)

Problem 10 (Diagram, Solution 3)

Problem 11 (Solution 2)

Problem 12 (Diagram, Solution 3)

Problem 13 (Solution 3)

Problem 14 (Diagram, Solution 2)

Problem 15 (Solution 2)