Question 726912
A is locked in. So there are 2 slots/tickets left and 4 people left to fill them.


So there are 4 C 2 = (4!)/(2!*(4-2)!) = (24)/(2*2) = 6 ways to do this.


This means that there are 1*(4 C 2) = 6 ways to select 3 people where A is one of those people.


This is out of 5 C 3 = (5!)/(3!*(5-3)!) = 10 ways to select 3 people (out of 5)


So the probability is 6/10 = 3/5




The answer as a fraction is <font color="red">3/5</font>


The answer as a decimal is <font color="red">0.6</font>


The answer as a percent is <font color="red">60%</font>