# Chapter 4: Use Matrix Logic - PowerPoint PPT Presentation

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Chapter 4: Use Matrix Logic. Tom, John, Fred, and Bill each brought his favorite meat to barbecue. From the clues below, determine each man’s occupation and favorite meat. Tom is neither the nurse nor the teacher. Fred and the pilot play in a jazz band together.

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Chapter 4: Use Matrix Logic

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Chapter 4:

Use Matrix Logic

Tom, John, Fred, and Bill each brought his favorite meat to barbecue. From the clues below, determine each man’s occupation and favorite meat.

Tom is neither the nurse nor the teacher.

Fred and the pilot play in a jazz band together.

The burger lover and the teacher are not musically inclined.

Tom brought hot dogs.

Bill sat next to the burger fan and across from the steak lover.

The secretary does not play an instrument or sing.

Tom Pilot Hdog

John Scty Burg

Fred Nurse Steak

Bill Tchr Chkn

### Strategy: Use matrix logic

• Mark traits from clues.

• Combine clues, perhaps using adjunct lists.

• Eliminate possibilities and act on eliminated possibilities.

• Substitute.

• Cross-correlate.

• For other approaches or problems: Study the introduction, and test assumptions.