help

I wrote them all down and this is what i got:

 

moor

 

moot

 

mort

 

room

 

root

 

rort

 

roto

 

toom

 

toro

 

torr

 

trow

 

worm

 

wort

Combinations = 22

Permutations = 286

 

How many four-letter words can be made from the letters "TOMORROW"?

 

I assume nonsense works are ok?  I expect you just want 4 letter strings.

TMW OOO RR

I think it is just    8P4/( 3!2!) = 1680/12 = 140