Solve the problem.
-How many four-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, if repetitions Of digits are allowed?
A) 8999
B) 9000
C) 10,000
D) 256

Question

Quizplus · Accepted Answer

A four-digit number can have any digit from 0 to 9 in each of its four positions. Since repetitions are allowed, there are 10 choices for each digit. Therefore, the total number of four-digit numbers is 10 * 10 * 10 * 10 = 10,000.

Solve the Problem. -How Many Four-Digit Numbers Can Be Formed Using the Digits