Download 101 Puzzles in Thought and Logic (Math & Logic Puzzles) by C. R. Wylie Jr. PDF

By C. R. Wylie Jr.

Do you love puzzles in keeping with good judgment and reasoning? do this one:
In a definite financial institution the location of cashier, supervisor, and teller are held by means of Brown, Jones, and Smith, even though now not unavoidably in that order. The teller, who was once an in basic terms baby, earns the least. Smith, who married Brown's sister, earns greater than the executive. What place does every one guy fill?
If you're keen on to entertain your self and stretch psychological muscle tissues on difficulties like this or tougher ones, listed below are a hundred and one completely new difficulties for that you want no precise wisdom, no mathematical training—simply the facility to cause clearly.
Follow those difficulties via and you'll not just raise your skill to imagine in abstractions, yet you'll take pleasure in fixing homicide difficulties and robberies, see which fishermen are liars and the way a blind guy can determine colour in simple terms by way of common sense, and revel in dozens of attention-grabbing occasions. Puzzles diversity from effortless to fairly tricky, and should please either rookies and experts.

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Extra resources for 101 Puzzles in Thought and Logic (Math & Logic Puzzles)

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The brakeman has no relatives on the crew. The engineer and the fireman are brothers. John is Pete's nephew. The fireman is not the conductor's uncle, and the conductor is not the engineer's uncle. What position does each man hold, and Iww tll"e the men related? 17 Ed, Frank, George, and Harry took their wives to the Country Club dance one Saturday evening not long age. At one time as a result of exchanging dances Betty was dancing with Ed, Alice was dancing with Carol's husband, Dorothy was dancing with Alice's husband, Frank was dancing with George's wife, and George was dancing with Ed's wife.

What is the name 01 each man's wife and son? 45 Three men named Lewis, Miller, and Nelson fill the positions of accountant, cashier, and clerk in the leading department store in Centerburg. If Nelson is the cashier, Miller is the clerk. If Nelson is the clerk, Miller is the accountant. If Miller is not the cashier, Lewis is the clerk. If Lewis is the accountant, Nelson is the clerk. What is each man's job? 46 Dick's work in mathematics had been on the borderline between A and B during most of the term, so one day just before examinations he stayed after class to ask his teacher what final grade he might reasonably expect.

Preliminary questioning disclosed the curious fact that one of the suspects was a highly respected judge, one just an average citizen, and one a notorious crook. In what follows they will be referred to as Brown, Jones, and Smith, though not necessarily respectively. Each man made two statements to the police, which were in effect Brown: Jones: Smith: I didn't do it. Jones didn't do it. Brown didn't do it. Smith did it. I didn't do it. Brown did it. Further investigation showed, as might have been expected, that both statements made by the judge were true, both statements made by the criminal were false, and of the two statements made by the average man one was true and one was false.

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