Question

Find the number of permutations of the word "helicopter."
A. 3,628,800
B. 1,814,400
C. 328,800
D. 452

Answer 1

helicopter = 9 distinct letters (HELICOPTR), and total of 10 letters

Number of permutations without replacement for distant objects = (T)! / X!, where T is the total number of letters to be permuted, and X is the objects that are similar

There are 10 total letters, so T = 10.
There are 2 objects that are similar (E), so X = 2

Permutations of HELICOPTER = 10! / 2!

Answer 2

so B ! thank you! thatll help with the rest of them