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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
John, Johny and Janardan participated in a race and each won a different medal among Gold, Silver and Bronze, not necessarily in that order. Each person among them gives two replies to any question, one of which is true and the other is false (in any order). When asked about the details of the medals obtained by them, the following were their replies:
John: I won the Gold medal.Johny won the Bronze medal.
Johny: John won the Silver medal.I won the Gold medal.
Janardan: Johny won the Silver medal.I won the Gold medal.
Which among the following is the correct order of the persons who won the Gold medal, the Silver medal and the Bronze medal respectively?
Solution
Each among John, Johny and Janardan is an Alternator.Let John's first statement be true and second be false;
| I | II | Medal | |
| John | T | F | Gold |
| Johny | F | F | Silver |
| Janardan | T | F | Bronze |
Hence, Johny is not an Alternator, which means our initial assumption was false.
Let John's first statement be false and second be true:
| I | II | Medal | |
| John | F | T | Silver |
| Johny | T | F | Bronze |
| Janardan | F | T | Gold |
Hence, Janardan ⇒ Gold medal
John ⇒ Silver medal
Johny ⇒ Bronze medal
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