6 articles trouvés pour ce sujet.








Weighing stars and hearts 
20190225 

Zach pose la question : Two stars and one heart weigh 38 units. One star and one heart weigh 27 units what is the weight of each? Penny Nom lui répond. 





5 men took turns weighing themselves on a scale 
20060330 

Bev pose la question : 5 men took turns weighing themselves on a scale. However, they weighed each other two at a time, ten times total, so that every possible combination of two men was weighed. The scale had the following read out for the pairs, 236,244,228,250,258,230,246,238,242,and 252 pounds. How heavy was the heaviest man? Claude Tardif lui répond. 





Twelve golf balls 
20051228 

Todd pose la question : You have 12 golf balls and 11 of them are the exact same weight, but one of them is either a little heavier or a little lighter. You only have three attempts to weigh the balls. How can you determine which ball weighs more/less than the rest? Penny Nom lui répond. 





A counterfeit coin 
20040123 

Kim pose la question : You are considering buying 45 silver coins that look alike, but you have been told that one of the coins is a lightweight counterfeit. Find the least number of weighings on a balance scale that you can use to be certain you have found the counterfeit coin? Penny Nom lui répond. 





Splitting weight 
20030210 

Jin Ho pose la question : A balance scale has only two weights, 1 ounce and 4 ounces. In only three weighings split 180 ounces of seed in two bags of 40 and 140 ounces. Penny Nom lui répond. 





Weighing pumpkins 
20020908 

Jennifer pose la question : Suppose five pumpkins are weighed two at a time in all possible ways. The weights in pounds are recorded as 16, 18, 19, 20, 21, 22, 23, 24, 26, and 27. How much does each individual pumpkin weigh. NO FRACTIONS! Penny Nom lui répond. 


