Download 100 Math Brainteasers. Arithmetic, Algebra, and Geometry by Zbigniew Romanowicz, Tom eMusic, Bartholomew Dyda PDF

By Zbigniew Romanowicz, Tom eMusic, Bartholomew Dyda

100 Math Brainteasers (Grade 7-10) is a sophisticated choice of 100 mathematics, algebra, and geometry assignments, which successfully teach the brain in math talents. it will likely be useful for college students attending highschool and in addition in coaching for Mathematical competitions or Olympiads at a more youthful age. The assignments can both be utilized in the school room or in extracurricular actions. the joys and video games are pleasant, unique, and fixing them is much more relaxing due to the humorous illustrations.

Most of the mathematics difficulties don't require any remarkable mathematical talent, yet notably, they problem one's creativity and talent to imagine logically. just a couple of solicit the information of algebraic expressions and principles of geometry.

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Additional info for 100 Math Brainteasers. Arithmetic, Algebra, and Geometry Brain Teasers, Puzzles, Games, and Problems...

Example text

What were her day’s takings if she sold the fruit at 2 dollars apiece? 55. BUNNIES FOR SALE A certain rabbit keeper brought his rabbits to the market. The first customer bought 1/6 of all the animals plus 1; the second buyer again took 1/6 of the remaining rabbits + 2; the third customer bought 1/6 of the remaining animals + 3, and so on. When the man had sold all his rabbits, he found to his surprise that each customer had bought the same number of rabbits. How many rabbits did the salesman bring to the market, and how many customers did he have?

The product from Mark’s and Paul’s ages is greater by 16 than the product from Jack’s and Dave’s ages. In this foursome, two boys are twins. Give their names. 59. THE CASHIER’S MISTAKE Michael went to his bank to cash a check. The cashier, quite by mistake, paid him out as much in dollars as he should have had paid in cents, and as much in cents as he should have had paid in dollars. Michael did not count the money before pocketing it and paid no attention to a five-cent coin that he dropped on the floor in the process.

9. NINE-DIGIT NUMBERS Out of the digits 1, 2, 3, 4, 5, 6, 7, 8, and 9, a nine-digit number was formed in which each of the digits enumerated occurred only once, and in addition, each digit was either greater by 5 or smaller by 4 than the preceding one. How many such numbers can be formed? 10. PUPILS AND GEOMETRY The teacher gave her Class-five pupils a difficult geometry problem to solve. It turned out that the number of boys who solved it was greater by one than the number of girls who failed to do so.

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