Answer should be 2, 7/2 hopefully this helped ^^
The first one is the answer
C=7n because
28 divided 4 is 7
7 is the proportional
Using the arrangements formula, considering the given digits, it is found that Edward writes 6 numbers.
<h3>What is the arrangements formula?</h3>
The number of possible arrangements of n elements is given by the factorial of n, that is:

In this problem, the first digit has to be 5, while the other three are arranged, hence the total number of arrangements is given by:

More can be learned about the arrangements formula at brainly.com/question/25925367
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Answer:
I hope it help............