By Bert Kinzey
This ebook is superb.
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Extra resources for A-7 Corsair II in Detail & Scale Vol 22
160 Weight Trick II Another intriguing problem (we met the first in the 18th Week as “Weight Trick I” on p. 25) is the following: eight of nine boxes weigh exactly the same; one of the nine is somewhat lighter than the others. How many times do you have to use the balance scale in order to determine which is the lighter box? Solution: p. 160 At Lake Michigan IV Working diligently, Steve and Tommy figured out a winning strategy for any number of piles. They named it the Binary Strategy. We let Tommy explain: 30th Week 43 “Let’s write the number of matches in the piles as binary numbers.
129 18th Week How Did I Know That? ” “OK. ) “The result is 1,089. ” “Yes. ” Hint: p. 77 Solution: p. 130 Weight Trick I I have four boxes on my right, three of which weigh exactly the same. The fourth box has a different weight, however. I also have three boxes on my left, each weighing the same as the three boxes of equal weight on my right. Using a balance scale only twice, I need to determine which one of the four boxes on my right has a different weight from the others, and whether 26 The Gym this box is heavier or lighter than the others.
Hint: p. 79 Solution: p. 147 At Lake Michigan II Tommy has laid out the matches in small piles: a pile of one, a pile of two, and a pile of three. (See 23rd Week, rules of the puzzle “At Lake Michigan I,” p. ) Steve goes first. Who has a winning strategy? Solution: p. 148 Dinner Guests A teacher couple (husband and wife, both teachers) invited a doctor couple and an engineer couple to dinner. The blonde wife is busy in the kitchen; her husband arranges a chess board. The doorbell rings. The 36 The Gym host asks two brown-haired and two black-haired guests to come in.
A-7 Corsair II in Detail & Scale Vol 22 by Bert Kinzey