Question

In how many ways can letter of the word RAILINGS arrange so that R and S always come together?
A) 1260
B) 2520
C) 5040
D) 1080

Answer 1

$\huge{Hey Mate!!!}$

☆☞ Here is ur answer ☜☆

✔✔ The number of ways in which the letters of the word RAILINGS can be arranged such that R & S always come together is



✔✔ Count R & S as only 1 space or letter so that RS or SR can be arranged => 7! x 2!



✔✔ But in the word RAILINGS, I repeated for 2 times => 7! x 2!/2! = 7! ways = 5040 ways



HOPE IT HELPS!

Answer 2

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