Answer:
Step-by-step explanation:
From the question we are told that:
Percentage of audience in first concert
Percentage of audience in second concert
Percentage of audience in third concert
Audience Percentage at at-least one concert
Percentage of audience at first & second concert
Percentage of audience in first & third concert
Percentage of audience in second & third concert
Generally the equation for probability of attending all concerts is mathematically given by
Therefore the probability that a randomly selected audient attended all the concerts