Answer:
Step-by-step explanation:
Given
Required
Determine the probability of selecting the oldest 3
First, we need to determine the total possible selection.
Since it's a selection, we make use of combination as follows:
In this case:
So:
In the combination, there can be only 1 set of oldest people.
So:
This is the line whose y-intercepts is -4 and whose x-intercept is -4