There are total 13 letters in the word "ASSASSINATION" 3‌ A's, ‌4‌ S's, ‌2‌ I's, ‌2‌ N's, ‌1‌ T's, l O's ‌ Let all S′ be represented by a single letter Z New word is AAINAIONZ. ∴ Total number of ways of forming a way taken all S's are together =‌