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Tju [1.3M]
2 years ago
15

Suppose account numbers for an internet service provider consist of alpha-numeric characters. The first character is a digit (0

through 9). The next 2 characters are capital letters (A through Z) and the last four characters are digits. How many account numbers are possible if no digit appears more than once? Your Answer:
Mathematics
1 answer:
Amiraneli [1.4K]2 years ago
6 0

Answer:

20,442,240 account numbers are possible.

Step-by-step explanation:

The first character has 10 possible values.

The next 2 has 26 * 26 = 676 possible combinations.

The last 4 has 9*8*7*6 = 3024 possible combinations.

So the answer is 10 * 676 * 3024

= 20,442,240.

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