Question

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?

Answer 1

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.

Answer 2

Answer:

its 256 i will give u the answer but not the work because i did it on paper

Step-by-step explanation: