KSP Constable · Mental Ability & Reasoning
Set relationships visualised through Venn diagrams.
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Q1 · Venn Diagrams · EASY
In a group of 50 people, 30 speak Kannada, 25 speak Hindi, and 10 speak both Kannada and Hindi. How many people speak neither Kannada nor Hindi?
Q2 · Venn Diagrams · MEDIUM
In a class of 60 students, 35 play cricket, 30 play football, and 20 play hockey. 15 play both cricket and football, 10 play both football and hockey, and 12 play both cricket and hockey. If 8 students play all three games, how many students play only cricket?
Q3 · Venn Diagrams · MEDIUM
In a survey of 100 police recruits, 60 can ride a motorcycle, 50 can drive a car, and 40 can operate a computer. 30 can both ride a motorcycle and drive a car, 20 can both drive a car and operate a computer, and 25 can both ride a motorcycle and operate a computer. If 15 recruits have all three skills, how many recruits have at least one of these three skills?
Q4 · Venn Diagrams · HARD
In a police station, 120 officers were surveyed about their training in three areas: weapons (W), self-defense (S), and first-aid (F). 70 have weapons training, 60 have self-defense training, and 50 have first-aid training. 35 have both W and S, 30 have both S and F, and 25 have both W and F. If every officer has training in at least one area and 18 officers have training in all three areas, how many officers have training in exactly two areas?
Q5 · Venn Diagrams · HARD
Which diagram best represents the relationship among Teachers, Graduates, and Doctors?