Question

In how many ways optical can be arranged vowels are always together

Answer 1

OPTICAL is a 7 letter word, with 3 vowels O, I and A.

Let these three vowels be a set and let me indicate it as X.

So one arrangement is as the following: XPTCL

In the word XPTCL, there are 5 letters with no digit repetition.

So the answer is 5! = 120.

So we can make 120 words in which vowels are together.

Thank you...

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