A box contains red, blue, and green balls. If there are twice as many red balls as blue balls and three times as many green balls as red balls, which color has the least number of balls?
A committee consists of members from three departments: HR, IT, and Marketing. If the committee must have at least one member from each department and the total members cannot exceed five, which of the following combinations is valid?
In a group of six people: A, B, C, D, E, and F, A is older than B but younger than C. D is older than E but younger than F. If C is older than F, who is the youngest?