1.

How many words can beformed using the letters in the word COSTING, the vowels being notthe leseparated?

Answer»

when the vows are not separated.. the O and I arrd terms as same letter.. and are worked together

so in all, previously there are 7 LETTERS IN COSTING , but without separating vowels.. OI will be counted as one.. so, total no of words will be 6! = 720

In COSTING, there are 2 vowels, O and I.When vowels are together, O and I will be treated as 1 letter.So, total no of letters taking the vowels together = 6.No.of ways= 6!= 720

wrong answers....Correct Answer is 1440



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