Probability With Two Outcomes PROBLEM?

Question

A multiple-choice test gives 5 possible choices for each answer, of which 1 is correct. The probability of selecting the correct answer by guessing is 1/5. Find the probability of getting 5 out of the 10 correct by guessing.

Is the following, the correct answer to this problem?
10C5 x (1/5)^5 x (4/5)^5

Note: 10C5 is 10 combination 5.

Answer 1

This is the probability of getting exactly 5 of 10 right.