Question

How may permutations of the word “spell” are there? There are____________

Answer 1

can anyone help????????

Answer 2

The number of permutations with repeats is
\(\Large \frac{N!}{n_1!n_2!...n_k!}\)
where
N=total number of items
k=number of types of items
n1,n2...nk=number of items of each type.
For unique items, put n=1
Note that \(\sum_1^k n_k = N\)

Example:
How many permutations can we form with the word parallel?
there are 2a's, 1e, 3l's, 1p, 1r for a total of 8 letters.
The permutation is therefore
\(\Large \frac{8!}{2!1!3!1!1!}=\frac{40320}{2\times1\times6\times1\times1 }=3360\)

See also following link if you need more explanations:
http://www.mathwarehouse.com/probability/permutations-repeated-items.php

Answer 3

oh dang hold up