Solve the problem.
-How many 4-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if the first digit cannot be 0? Repeated digits are allowed.
A) 9,000
B) 3,024
C) 6,561
D) 6,480

Question

Quizplus · Accepted Answer

For a 4-digit number, the first digit can be any of the 9 options (1-9), as 0 is not allowed. The remaining three digits can be any of the 10 digits (0-9), allowing for repetition. Therefore, the total number of possible 4-digit numbers is 9 * 10 * 10 * 10 = 9,000.

Solve the Problem. -How Many 4-Digit Numbers Can Be Formed Using the Digits