To find the number of times the letters in a word can be rearranged, you would use the formula nPr to find the number of permutations of the letters.
There are 24 ways to rearrange the letters:
{t,i,m,e} {t,i,e,m} {t,m,i,e} {t,m,e,i} {t,e,i,m} {t,e,m,i} {i,t,m,e} {i,t,e,m} {i,m,t,e} {i,m,e,t} {i,e,t,m} {i,e,m,t} {m,t,i,e} {m,t,e,i} {m,i,t,e} {m,i,e,t} {m,e,t,i} {m,e,i,t} {e,t,i,m} {e,t,m,i} {e,i,t,m} {e,i,m,t} {e,m,t,i} {e,m,i,t}