Problem Solving (PS) | Re: In how many ways can the letters of the word GOSSAMERE be rearranged

consider SSM as a single entity, now we have
G-1 ; O-1 ; A-1; E-2 ; R-1 ; SSM -1

total 7 items in which SSM stands at the middle ,

- - - SSM - - -

so we should arrange 6 items in 6 blanks in which E item is repeated 2 times

so the no of ways = 6!/ 2!

now SSM can be arranged in 3 ways SSM, SMS, MSS ;

therefore total no of ways are : 6!*3 / 2! opt D

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