We have, E, E, L, R, T, T Words starting with E,L,R, where first letter is T (i) Starting with E:‌
5!
2!
=60 (ii) Starting with L:‌
5!
2!2!
=30 (iii) Starting with R:‌
5!
2!2!
=30 Total =60+30+30=120 Fixed TE next is T Letters before T is E,L,R Each gives 3!=6 ⇒3×6=18 Now, fixed TETL, next is E one word before TETLE k is remaining letter which is before 2 letters. Final letter is TETLER =1 ‌ Rank ‌=120+18+2+1=141.