Multiple choice general knowledge math & puzzles What is the unit digit of 3^1244? 1 3 7 9 Reveal answer Fill a bubble to check yourself A Correct answer Explanation The unit digit of powers of 3 cycles in a pattern: 3, 9, 7, 1. Since 1244 is divisible by 4 (1244/4 = 311 with remainder 0), 3^1244 has the same unit digit as 3^4, which is 1.