Customer account “numbers” for a certain company consists of 2 letters followed by 2 single-digit numbers. How many different ac
count numbers are possible if repetition of letters and digits are allowed?
1 answer:
Answer:
Step-by-step explanation:
<u>Let the format be:</u>
- LLDD- where L stands for letter and D- digit
For each L we have 26 (English alphabet) and for each D we have 10 options.
<u>Number of possible accounts:</u>
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