13 problemsAlgebraic setup and sequences
Start with an ordered session
This collection is designed to feel like a focused training run, not a catalogue. Begin at the first problem and work through in order, or dip into the list below if you want to target a specific past-paper question.
Start session

Best for: algebra · sequences · word problems

Problems in this collection

Each problem keeps the collection context, so next and previous navigation stays inside this training set.

Problem 11 · Junior Mathematical Olympiad 2005

First problem in this session

Start session

Problem 11 · Junior Mathematical Olympiad 2007

Position 2 in this session

Open problem

Problem 16 · Junior Mathematical Olympiad 2008

Position 3 in this session

Open problem

Problem 11 · Junior Mathematical Olympiad 2010

Position 4 in this session

Open problem

Problem 13 · Junior Mathematical Olympiad 2011

Position 5 in this session

Open problem

Problem 12 · Junior Mathematical Olympiad 2012

Position 6 in this session

Open problem

Problem 12 · Junior Mathematical Olympiad 2013

Position 7 in this session

Open problem

Problem 16 · Junior Mathematical Olympiad 2015

Position 8 in this session

Open problem

Problem 11 · Junior Mathematical Olympiad 2018

Position 9 in this session

Open problem

Problem 15 · Junior Mathematical Olympiad 2021

Position 10 in this session

Open problem

Problem 11 · Junior Mathematical Olympiad 2022

Position 11 in this session

Open problem

Problem 14 · Junior Mathematical Olympiad 2024

Position 12 in this session

Open problem

Problem 4 · Junior Mathematical Olympiad 2025

Position 13 in this session

Open problem