Exponents (Last Digit)

Explore deep-thinking maths problems involving last digits, powers, prime numbers, and digit tricks. Perfect for ages 11–16 and ideal for UKMT, AMC, and GCSE enrichment. Includes Olympiad-style theory with modular arithmetic, Diophantine equations, and factorial analysis.

Start: Find the last digit of the number: a) 2^1…
JuniorMathematics
Domain · Number Theory

Start solving

Pick a puzzle below — each one has an interactive simulator you can play right away.

Start: Find the last digit of the number: a) 2^1…
Interactive puzzles
3 puzzles in this collection
Find the last digit of the number: a) 2^100 b) 54949 c) 20252025 The Guinness B
Could this be a typo? A shop received 206 litres of milk in containers of 10 and
Find the last digit of the number 77^7. (The powers are calculated from the top

Explore deep-thinking maths problems involving last digits, powers, prime numbers, and digit tricks. Perfect for ages 11–16 and ideal for UKMT, AMC, and GCSE enrichment. Includes Olympiad-style theory with modular arithm…

Learn the methodRead guide

Explore deep-thinking maths problems involving last digits, powers, prime numbers, and digit tricks. Perfect for ages 11–16 and ideal for UKMT, AMC, and GCSE enrichment. Includes Olympiad-style theory with modular arithmetic, Diophantine equations, and factorial analysis.