Category: General Knowledge | Last updated: 2026-09-18
If selecting 3 electives from {Art, Biology, Chemistry, Drama, Economics}, and Art and Biology cannot both be chosen, and if Drama is chosen then Economics must also be chosen, which selection is NOT valid?
A) {Art, Drama, Economics}
B) {Biology, Chemistry, Drama}
C) {Chemistry, Drama, Economics}
D) {Art, Chemistry, Economics}
Explanation
B has Drama but not Economics, violating "if Drama then Economics." All other options satisfy both constraints.