Answer the following question using arrangements with repetition, permutations, or combinations. Be sure to explain why the particular counting technique applies to the problem.

How many different

seven-digit

passwords can be formed from the

numbersonetoeight

if repetition is not allowed?

Question content area bottom

Part 1

Determine the appropriate counting technique. Choose the correct answer below.

A.

Permutations should be used because no item may be selected more than once and the order matters.

B.

Combinations, because no item may be selected more than once and the order does not matter.

C.

Arrangements with repetition should be used because no item may be selected more than once and the order matters.

D.

Arrangements with repetition should be used because we make selections from a group of choices.

E.

Permutations should be used because we make selections from a group of choices

Part 2

Calculate how many different passwords are possible.

enter your response here

(Type a whole number.)