Download e-book for iPad: Great Book of Math Puzzles by Philip Heafford

By Philip Heafford

ISBN-10: 0806988142

ISBN-13: 9780806988146

Wear your psychological seatbelt and prepare for a mind-boggling day trip via mathematical historical past, symbols, circles, triangles, and an entire host of quantity puzzles. Spend hours racking your mind over this, the best number of math puzzles, ever!

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Example text

FALSE Zeno was the originator of the paradox of Achilles and the tortoise. , and he has been associated with many paradoxes of time, space, and motion. Zeno argued that no matter bow fast Achilles ran he could never catch the tortoise, for the latter would move a short distance on as Achilles covered the distance between him and where the tortoise was! 3. M. M. is to use the twenty-four-hour clock. The railway timetables on the continent of Europe leave no possible doubt about the time of the day or night when a train is due to leave a station.

Any triangle which has two of its three sides equal is called an isosceles triangle. If we look around us we can often find geometrical figures in nature. In the construction of houses, ships, and aircraft, the isosceles triangle is often encountered. 46 3. SCALENE This is a triangle which is "uneven" because it has all its sides unequal. " 4. PEDAL This triangle is sometimes called the orthocentric triangle. If AD, BE, and CF are the perpendiculars dropped from the vertices of the triangle ABC to the opposite sides, then the triangle DEF is the pedal triangle.

Phillips will earn during the second year $1,800 + $300 + $2,100 + $300 = $4,500. Hence it is clear that Mr. Phillips will earn a sum of $1,200 more than Mr. Henry by the time they have both worked two years. As the years go by Mr. Phillips will earn increasingly more than Mr. Henry. 14. "C" Gets the Worst of It The two relevant equations are: B + C = 2 5 and From these we derive that 3C =- or 5 B= 2C C =- 15 2. 202 - yards. A runs 1,760 yards while B runs 1,740 yards and C runs 1,720 yards. B runs 1,740 yards while C runs 1,720 yards 61 B runs 1,760 yards while C runs B beats C by 20" '7 1,760 1,740 yards yad or 1,739g7 yards yards in a mile 3.

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Great Book of Math Puzzles by Philip Heafford

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