In how many different ways can the letters of the word BOOKLET be arranged such that B and T always come together?
In how many different ways can the letters of the word BOOKLET be arranged such that B and T always come together?
(a) 360 (b) 720 (c) 480 (d) 5040 (e) None of these
5 views
1 Answers
(b) Treat B and T as a single letter. Then the remaining letters (5 + 1 = 6) can be arranged in 6! ways. Since, O is repeated twice, we have to divide by 2 and the B and T letters can be arranged in 2! ways.
Total no. of ways= 6!x2!/2 =720
5 views
Answered