posted by Christina .
how do you do permutations???
would you put the total number of the letters on top and then put what is repeated on bottom???
there are a total of 10 letters, consisting of 3 e's,
2 t's, 2 w's, s, a, and r.
for this problem
no of permutations (arrangements)
= 10!/(3!2!2!) = 151200