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Taking matches |
2001-05-05 |
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Mark pose la question : Two piles of matches are on a table. A player can remove a match from either pile or a match from both piles. The player who takes the last match loses. If there are two players, how should you play? Claude Tardif lui répond. |
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Probabilities and dice. |
2001-05-04 |
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Carmen pose la question : Hi! My name is Carmen! I am a member of a grade 5 class in Edmonton, AB. We were talking about probability in math, and I was wanted to know what the probability (odds) of rolling two sixes would be rolling two dice? If it is not to diffucult could you tell me what the probability (odds) of rolling any number with two dice were? Andrei Volodin and Penny Nom lui répond. |
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How many acres are in a square mile? |
2001-05-04 |
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Terri pose la question : How many acres are in a square mile? Judi McDonald lui répond. |
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Adding and subtracting rational expressions |
2001-05-03 |
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Donna pose la question : Adding and subtracting Rational expressions. I am in grade 10 and I am a student here is an example of the questions: 1/(x+1) - 1/(x-1) = ? Penny Nom lui répond. |
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Are you overweight? |
2001-05-03 |
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Oneita pose la question : How do I square a number.....? My problem is : square your height in inches and take 4.25 percent of the result to determine if you are overweight. Claude Tardif lui répond. |
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Les tableaux de conversions |
2001-05-03 |
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Jean-Jacques pose la question : Sur quel site est il possible de trouver tous les tableaux de conversions de mètres,kg,litre,m2,m3 Quelle est la relation entre les m3 et les litres 1 m3 = 1000 litres = 1000 kg? Claude Tardif lui répond. |
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Logs for the fire |
2001-05-02 |
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Tom pose la question : Three girls named Amanda, Beatrice, and Cleo visit a summer cottage. Amanda brings 5 logs for the fire, Beatrice brings 3 logs and Cleo contributes 80 cents. How should the money be divided among the other two girls so that each of the three is felt to have contributed equally to the cost of the fire. Penny Nom lui répond. |
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Graphing equations |
2001-05-01 |
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A student pose la question : If, for example, 4x2-12x+9=0 and -4x2+12x-9=0, which I'm assuming it does since you can derive that equation from the first, why do those two equations have different graphs? Penny Nom lui répond. |
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Tiling a floor |
2001-05-01 |
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Sarah pose la question : Cut out of paper or cardboard a quadrilateral having no two sides parallel, no two sides of equal length and no indentations. Can an endless floor be tiled with copies of such a figure? Claude Tardif lui répond. |
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Area of a regular polygon |
2001-05-01 |
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Carl pose la question : What is the formula for finding the area of a regular Hexagon and a regular Pentagon Penny Nom lui répond. |
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Population growth |
2001-05-01 |
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Gina pose la question : Suppose the population of a country increases at a steady rate of 3% a year. If the population is 50 million at a certain time, what will it be 25 years later? Define the recurrence relation that solves this problem. Penny Nom lui répond. |
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Average speed |
2001-05-01 |
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Tom pose la question : A ship goes in one direction, west to Hawaii, at 20 nautical miles per hour and, because of the wind, makes the return trip at 30 nautical miles per hour. What is the average speed? Claude Tardif lui répond. |
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Typing a project |
2001-05-01 |
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Tom pose la question : Two students have to type a project. One can do it in 2 hours. It would take the other student three hours. They have 2 type writers. How fast can they finish by working simultaneously? Claude Tardif lui répond. |
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A sequence defined recursively |
2001-05-01 |
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A student pose la question : A sequence s is defined recursively as follows: s0=1 s1=2 sk=2sk-2 for all integers - Compute s2,s3,s4... to guess an explicit formula for the sequence sk. Penny Nom lui répond. |
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A sequence of even terms |
2001-04-29 |
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A student pose la question : A sequence c is defined recursively as follows: c0 = 2 c1 = 4 c2 = 6 ck= 5ck-3 for all integers Prove that cn is even for all integers. Leeanne Boehm and Penny Nom lui répond. |
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