The order in which he can wear the socks with repetition in 7 days is 823, 543 orders
The formula for calculating permutation with repetition is given as;
Permutation = [tex]n^r[/tex]
Where n = 7
r = 7
Substitute into the formula
Permutation = [tex]7^7[/tex]
Permutation = [tex]823, 543[/tex] ways
Thus, the order in which he can wear the socks with repetition in 7 days is 823, 543 orders
Learn more about permutation here:
https://brainly.com/question/12468032
#SPJ1
