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Field Notes
FIELD NOTES Midsummer Puzzles
By Barry Evans
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fieldnotes@northcoastjournal.com
It’s that time of the solstice when days start to get shorter and Journal readers get to sharpen their brains with Ye Olde Puzzle Edition. Check back in next week’s issue for the answers.
Let’s start with an easy one:
The mistake
Pedal to the metal
A car goes 30 mph for 1 mile. How fast must it go in the next mile to average 60 mph for the entire 2-mile trip?
Four fours
This one can be savored, like a crossword. Write equations with four 4s to make the numbers 0-13, using the standard arithmetical symbols + - × ÷ √ ( ) . and ! (where 5! = 5 × 4 × 3 × 2 × 1). Bonus for doing them in more than one way. (Remember the PEMDAS order: Parentheses, Exponents, Multiplication and Division, left to right; Addition and Subtraction, left to right.)
So, for instance, 18 = 44 × .4 + .4; while 100 = 4! × 4 + √4 + √4
Special Words
What’s special about the words “job,” “polish” and (unless you’re a Brit), “herb?”
Arc-square
For geometry buffs. What’s the area of the blue square if the radius of the quadrant is 1 unit?
1
Matches
No set of puzzles would be complete with a matchstick challenge. Move one match to make the two sides equal. I give two solutions. l
Barry Evans (he/him, barryevans9@ yahoo.com) considers the late Martin Gardner the greatest puzzler of all time.
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