5mathematicsWhat is the area, to nearest whole number, of an equilateral triangle whose perimeter is 300 meters?Show AnswerLearn MoreShare
2mathematicsThis mysterious number, the base of a natural logarithm, is related to natural and exponential growth. What is this number called, and what is its decimal value?Show AnswerLearn MoreShare
16mathematicsA 19th century mathematician once stated that he was x years old in the year x2. In what year was he born?Show AnswerLearn MoreShare
4mathematicsThis region was a kingdom of Czechoslovakia until the 15th century, when it passed to Hungary and then to the Hapsburgs. It became the core of the new state of Czechoslovakia in 1918. Today the name can refer to certain artistic intellectuals. Which regioShow AnswerLearn MoreShare
4mathematicsTo the nearest whole number, what is the area of a circle whose circumference is 100 cm.?Show AnswerLearn MoreShare
4mathematicsCan you think of two numbers for which the sum of their squares is 628 and the difference of their squares is 340?Show AnswerLearn MoreShare
1mathematicsThe amount of chemicals in our drinking water is measured in milligrams per liter. The ratio of one milligram per liter is the same as the ratio of one dollar to ... how many?Show AnswerLearn MoreShare
16mathematicsYou buy a car, and wish to pay the car seller $12,000, divided into 24 payments, so that each payment is $20 more than the previous payment. How much will you pay in the first payment?Show AnswerLearn MoreShare
4mathematicsIf you go out to eat at a restaurant in a foreign country, and you must pay a 15% service fee, followed by a 12% tax on everything, even the service fee, what actual exact percentage did you pay above the base price?Show AnswerLearn MoreShare
14mathematicsTo the nearest whole number, what is the area of a triangle each of whose sides is 10 inches?Show AnswerLearn MoreShare
9mathematicsIn a single-elimination sports tournament beginning with 64 teams, how many games are played altogether until only one team, the champion, remains?Show AnswerLearn MoreShare
16mathematicsIf a bicyclist rides at 10 miles per hour for 10 minutes, and then speeds up to 20 miles per hour for the next 20 minutes, what is her average speed for this ride?Show AnswerLearn MoreShare
10mathematicsAn airplane departs at exactly 8:08:08 a.m. and arrives at its destination at exactly 3:03:03 p.m. What was the plane's exact travel time?Show AnswerLearn MoreShare
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