VTMO 2026 - Grade 6 - Semifinal - SET 3 - Self-study Question 18

VTMO · VTMO 2026 - Grade 6 - Semifinal - SET 3 - Self-study

Question 18

Find the units digit of $1+4+4^2+4^3+\cdots+4^{100}$.

1. 0
2. 1
3. 2
4. 3
5. 4