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How many thre...

Question

How many three letter codes can be formed by only vowels of English alphabets, given that repetition of letters is allowed?

A

125

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B

5

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C

25

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D

5!

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Solution

The correct option is B
5

We know that the vowels of English alphabet are 5
Number of 3 letter codes with repetition of letters allowed is 5³=125

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