Question

A number is randomly selected from {80, 81, 82, 83, 84, 85, 86}.

Answer 1

Answer:

The correct answer is 3/9 hope this helped :)

Step-by-step explanation:

Answer 2

The probability that the number picked is less than 84 p(A) is:
number of possible events with picked number less than 84/ total number of possible events = 4/7
The complement event of A is that event A does not occur. If the picked number is not less than 84 ( this means is greater than 84 or is 84). The probability of the complement event is:1- p(A)=3/7

Solution: B