Question

If you have all the letters of the alphabet spread on a table. How many different...

If you have all the letters of the alphabet spread on a table. How many different 4 letter strings can be formed with using the alphabet if the first letter must be a

vowel?

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Answer #1

First letter is vowel hence 5 ways to fill that place.

Since repetition is not allowed in this because once we use one letter it wouldn't be available to use again.

Total strings = 5 * 25 * 24 * 23 = 69000

Hence, 69000 such strings are possible.

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