The letters of the word OUGHT are written in all possible ways and these words are arranged as in a dictionary, in a series. Then the serial number of the word TOUGH is:
Solutions · 1
Official solution
Lets arrange the letters of OUGHT in alphabetical
order.
G, H, O, T, U
Words starting with
\[
G−−−−→4!H−−−−→4!O−−−−→4!
\]
TG−−−→3 !
T H −−−→3 !
T O G−−→2 !
T O H −−→2 !
T O U G H →1 !
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Total = 89