18mathematicsIf the difference between two numbers is 6, and the difference of their squares is 180, what is the sum of the numbers?Show AnswerShare
12mathematicsA circle is placed inside a square so that all 4 corners touch the circle. What percentage of the circle is occupied by the square?Show AnswerShare
8mathematicsYou begin writing down the letters of the alphabet in this pattern: You write A one time, B two times, C three times, D four times, and so on. What letter is 100th on the list?Show AnswerShare
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 AnswerShare
4mathematicsCan you think of two numbers for which the sum of their squares is 628 and the difference of their squares is 340?Show AnswerShare
8mathematicsIf there is a 40% chance that you will get a red light at a certain traffic intersection, what is the probability of you passing through the intersection with green lights three times in a row?Show AnswerShare
14mathematicsIf you could imagine the letters in the alphabet as a deck of 26 cards, and you went through the deck discarding every third card, for example you kept A and B but discarded C; kept D and E but discarded F; and so on, over and over, until there was only oShow AnswerShare
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 AnswerShare
6mathematicsTo the nearest whole number, what is the area of a circle whose circumference is 100 cm.?Show AnswerShare
13mathematicsAt a wedding reception, the bride and groom lead off the first dance. When the music stops the first time, each of the dancers gets another partner to dance with. When the music stops again, each dancer gets another partner to dance with. How many peopleShow AnswerShare
14mathematicsTo the nearest whole number, what is the area of a triangle each of whose sides is 10 inches?Show AnswerShare
18mathematicsA circle is placed inside a square so that all 4 corners touch the circle. What percentage of the circle is occupied by the square?Show AnswerShare
12mathematicsIf, according to a recent survey, the cost of living in Tokyo is 1.6 times that of New York, and 1.5 times that of London, then the cost of living in New York is what percentage greater than that of London?Show AnswerShare
8mathematicsIf you buy 100 shares of a stock at $30, 200 shares at $20, and 300 shares at $10, then sell all at $15, did you make a profit or loss? What percent?Show AnswerShare
