Is it possible to find the volume of a sphere?
What is 8.4 percent of 125?
A train leaves the city and heads for another small town at an average speed of 45 miles per hour. A second train leaves the small town and heads for the city along the same route at an average speed of 30 miles per hour. If the route is 450 miles long, how many hours will it take for the trains to meet?
What is the 50th digit after the decimal point in the decimal equivalent of 1/27?
What is a "square root"?
What is the reciprocal of 1/59?
-42+(-40)=
What are algebraic expressions with just one term?
What is the third number in pi?
Which is greater, 1/3 or 1/4?