Question

Jean is visiting her grandparents for 7 days, she's arranging a lunch with friends. If she picks a day at random there is a 30% chance all her friends will be available to meet... What is the probability that all her friends are available to meet for lunch on 4 different days?

9.7%
22.7%
2.3%

Answer 1

Its been a slight while since I have done probibility, but from what I remember, I came op with the answer of a 2.3% probability that all of her friends would be able to come to the lunch she plans on the 4 different days.