How many different 4-digit numbers can be formed using only digits 1, 2, 3, and 4, given that they contain each of these digits as many times as you want?

Question

asked Nov 17, 2019 135k views

2 Answers

Einat · Answer 1 · 2019-11-23T04:56:25+0000

Since the numbers are replaced, and we have 4 total digits to pick from, our answer is
4^4=256 , because of the mutliplication rule.