Solve the problem.
-How many different sequences of 4 digits are possible if the first digit must be 3, 4, or 5 and if the sequence may not end in 000? Repetition of digits is allowed.
A)2,997
B)2,000
C)1,512
D)2,999

Question

Quizplus · Accepted Answer

The first digit has 3 choices (3, 4, or 5). The next two digits each have 10 choices (0-9). The last digit has 999 choices (000 to 999, excluding 000). So, the total number of sequences is 3 * 10 * 10 * 9 = 2,997.

Solve the Problem. -How Many Different Sequences of 4 Digits Are Possible If