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Free Math Puzzle
Question 4: Give the net letter of the series A, B, D, H, _____?
Question 5: A bag contains a combination of 10 paise, 20 paise and 50 paise in the ratio 9:6:4. If the total value of 50 paise coins is Rs 3.20 more than the total value of the coins in the bag?
Question 7: 20 men take 10 days to dig a well working 8 hours a day. Find the time taken by 15 men working 9 hours a day to dig the same well?
Question 8: The selling price of 15 oranges is equal to the cost price of 10 oranges. Find the profit percentage?
Question 9: What is the area of the triangle with sides 10 cm, 14 cm and 16 cm?
Question 10: In how many ways can 26 books be divided equally among 4 boys?
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From Wikipedia
Mathematical puzzles make up an integral part of recreational mathematics. They have specific rules as do multiplayer games, but they do not usually involve competition between two or more players. Instead, to solve such a puzzle, the solver must find a solution that satisfies the given conditions. Mathematical puzzles require mathematics to solve them. Logic puzzles are a common type of mathematical puzzle.
Conway's Game of Life and fractals, as two examples, may also be considered mathematical puzzles even though the solver interacts with them only at the beginning by providing a set of initial conditions. After these conditions are set, the rules of the puzzle determine all subsequent changes and moves.
List of mathematical puzzles
The following categories are not disjoint; some puzzles fall into more than one category.
Numbers, arithmetic, and algebra
 Crossfigures or Cross number Puzzle
 Dyson numbers
 Four fours
 Feynman Long Division Puzzles
 Pirate loot problem
 Verbal arithmetics
Combinatorial
 Cryptograms
 Fifteen Puzzle
 Kakuro
 Rubik's Cube and other sequential movement puzzles
 Sudoku
 ThinkaDot
 Tower of Hanoi
Analytical or differential
 See also:Zeno's paradoxes
Probability
Tiling, packing, and dissection
 Bedlam cube
 Conway puzzle
 Mutilated chessboard problem
 Packing problem
 Pentominoes tiling
 Slothouberâ€“Graatsma puzzle
 Soma cube
 T puzzle
 Tangram
Involves a board
Chessboard tasks
Topology, knots, graph theory
The fields of knot theory and topology, especially their nonintuitive conclusions, are often seen as a part of recreational mathematics.
Mechanical
0player puzzles
From Yahoo Answers
Answers:Try these sites for ideas on math puzzles: http://www.syvum.com/teasers/ http://www.math.com/students/puzzles/puzzleapps.html http://www.coolmath4kids.com/ Hope these help and good luck with your project!
Answers:They are called CalcuWords in one puzzle magazine I get.
Answers:8x10x10x9x10x10x10x10x10x10 =7,200,000,000
Answers:Navy (above) is absolutely correct. Although, in his own words, fuzzy on the history, Fermat stated centuries ago that this is impossible. Of course we are all familiar with Pathagoras: a^2 + b^2 = c^2 But Fermat conjectured about powers higher than two. What about 3? What about 4? Etc. And so his famous "last theorem" was: a^n + b^n = c^n And he said that no known interger greater than 2 would be possible. So a^3 + b^3 = c^3 is impossible, according to Fermat. The really remarkable thing is that Fermat's theorem was not proved until 1996!! The famous BritishAmerican mathematician Andrew Wiles in 1993 produced a proof. Soon after, however, some fundamental errors arose in his monumental work, and he was forced into working on correcting these errors before submitting a final version of his proof in October of 1996. It is literally hundreds of pages long but shows the impossibility of n>2. :)
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