Find the probability that in a random arrangement of the letters of the word ‘UNIVERSITY’ the two I’s come together.

Explanation

Out of the letters in the word UNIVERSITY there are two I's

Number of permutation `=(10!)/(2!)`

The number of words in which two I's are

total number of words-number of words in which two I's are together

`= 9!/(10!/2!)`


=` (9!. 2!)/(10!)`


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