Answer:
x = 3
Step-by-step explanation:
..........................
Answers:

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Work shown for part 1

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Work shown for part 2

Answer:
P=20%
Step-by-step explanation:
Let's suppose that each question in the test has one and only one correct answer. This means we have 1 desired outcome out of the total 5 desired outcomes. Therefore:
Probability=#of desired outcomes / #of possible outcomes
or


P=0.20
P=20%