By Anthony S Filipiak
ISBN-10: 0517015447
ISBN-13: 9780517015445
A hundred puzzles, the best way to make and the way to unravel them. Mechanical puzzles of every kind, commonly mathematical or geometrical sort, with step by step directions for making and fixing.
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Extra info for Mathematical Puzzles: And Other Brain Twisters
Example text
The article even claimed the ghost or ghosts had reduced janitorial costs 25% by helping the building’s custodians do the vacuuming. ” The Reaction: The public took the story seriously, and when the tenants of the Great American Bank Building learned of the incidents, they began reporting their own sightings—including power failures, carpeting that had been “mysteriously vacuumed,” and cleaning equipment that moved from one floor to another; one electrician even reported seeing his tools float in midair and ghosts walking in the hallway.
7 billion. But It’s Not Just Us: The government of Japan recently financed a 7-year study to determine whether earthquakes are caused by catfish wiggling their tails. The saguaro cactus does not grow its first arm until it’s at least 75 years old. SUPERSTITIONS Here’s where some common superstitions come from. F INDING A FOUR-LEAF CLOVER The belief that four-leaf clovers are good luck comes from the Druids, ancient residents of the British Isles. Several times a year, they gathered in oak groves to settle legal disputes and offer sacrifices…then they ended their rituals by hunting for four-leaf clovers.
Special Events: Every act is a special event. Performers have included: • A Japanese trio playing “My Old Kentucky Home” on a table (upside down, strung like a cello), tea pot (a wind instrument), and assorted pots and pans (bongo drums) • A 15-piece orchestra of automobile horns • A seven-foot slide whistle requiring three people to operate it • A “Graduated Clanger”—a system of ever-smaller fire alarm bells, played like a xylophone THE ANNUAL CHICKEN SHOW Location: Wayne, Nebraska Background: Held the second Saturday in July, featuring a crowing contest for roosters, a free omelet feed for humans, and a chicken-flying meet, fully sanctioned by the International Chicken Flying Association.
Mathematical Puzzles: And Other Brain Twisters by Anthony S Filipiak
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