1) Cho tập A 0,1,...,9
a) Hỏi có bao nhiêu tập hợp con của A có ít nhất sáu chữ số?
b) Hỏi có bao nhiêu tập hợp con của A có sáu chữ số, trong đó có ít
nhất ba chữ số nhỏ hơn 6?

The data represents the semester exam scores of 8 students in a math course. {51,91,46,30,36,50,73,80} what is the five-number summary?

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is