How many strings of length n can be formed from the English alphabet ?

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The English alphabet has 26 unique letters.

The length being n, the number strings will be defined as

26n which is the required solution

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How many ways are there to choose a valid password of the computer system
How many ways are there to choose a valid password of the computer system

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Question ID: mtid-5-stid-8-sqid-252-qpid-139