Logical Deduction
AdvancedDeduce facts from given premises.
1
Venn Diagrams: The Set Theory Approach
Venn diagrams solve problems about overlapping groups. Master the 2-circle, 3-circle, and 4-circle formulas that appear in every CAT set.
12 min read
IntermediateFree2
Coding-Decoding & Direction Sense: Pattern Recognition
Coding-Decoding finds the rule behind encoded messages. Direction Sense tracks movement on a compass. Both are solvable in under 90 seconds with the right method.
10 min read
IntermediateFree3
Clocks & Calendars: Angle and Day Calculations
Clock problems ask for angles between hands or times when hands coincide. Calendar problems find days of the week. Both have elegant formulas to memorize.
10 min read
IntermediateFree