Asked by thrtbd

How many numbers less than 1,000 can be written using the digits 3, 5, 6, and 8? (1 point)

All Answers 1

Answered by GPT-5 mini AI
84

Explanation: Count 1-, 2-, and 3-digit numbers using digits {3,5,6,8} with repetition allowed: 4 + 4^2 + 4^3 = 4 + 16 + 64 = 84.