GATE ME 2017 Set 1 — Question 60
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General Aptitude → Analytical Aptitude → Deduction & Induction
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Question
, , and talk about ’s car collection. states that has at least 3 cars. believes that has less than 3 cars. indicates that to his knowledge, has at least one car. Only one of , and is right. The number of cars owned by is
Correct answer
(A) 0
Solution
Let be the number of cars owned by . The statements are:
- :
- :
- :
1.If : is false (), is true (), is false (). Only is true. This satisfies the condition.
2.If : is false, is true, is true. Two statements are true ( and ).
3.If : is false, is true, is true. Two statements are true ( and ).
4.If : is true, is false, is true. Two statements are true ( and ).
Thus, the only scenario where exactly one person is right is when owns 0 cars.Continue learning with Success Tracker
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