To find the maximum number who could like all three subjects, we use the principle of inclusion. The total number of pupils is 40. If x pupils like all three subjects, then the maximum occurs when the overlaps are as large as possible. Since 16 + 17 + 24 = 57, which is 17 more than 40, the maximum who like all three cannot exceed the smallest subject (Physics with 16). However, with the given numbers, the theoretical maximum is limited by the smallest set, but practically we need to ensure no set exceeds its size.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Dickson Tembo – 1 pts

• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• Area of Rectilinear Figures
• Distance of A Straight Line