Solve the following problems using permutation.
With explanation

1.In how many ways can 7 soldiers arrange themselves in a row?

2.if there are 10 available parking spaces,in how many different ways can 3 bicycle be parked in it?

3.Given the 6-letter BEAUTY.In how many different ways can we arrange its letters 5 at a time?

4.How many 4-digits number can be formed from the following set of digits number?(1,3,6and,9)

5. How many permutations of letters are there in the word "proof"?

Paki sagot po guys..need ko po tlgaa...​