If you had 10000 coins and your mom gives you 5000 pencils and your dad gives you 1000 pencils how many things do you have in all.

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2