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  • How many different 2-letter codes can be created using the letters A, B, C, and D, if repetition is allowed?Option: 1 <img alt="10" src="

How many different 2-letter codes can be created using the letters A, B, C, and D, if repetition is allowed?

Option: 1

10


Option: 2

16


Option: 3

12


Option: 4

18


Answers (1)

best_answer

Given that,

We have to form a 2-letter code using the letters A, B, C, and D.

Since repetition is allowed, there are 4 choices for each letter. 

Thus, the total number of codes formed is given by,

4^2=16

Therefore, the different 2-letter codes can be formed in 16 ways.

 

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Sayak

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