The volume of a pyramid varies jointly as its height and the area of its base; and when the area of the base is 60 sq. dm and the height 14 dm, the volume is 280 cubic dm. What is the area of the base of a pyramid whose volume is 390 cubic dm and whose height is 26 dm?
A cubical box is divided into four identical chambers that can hold one ball each. In how manyways can one fill the box with 3 blue balls, 3 red balls and 3 green balls?
Students attend our lectures, not because the mathematics we teach ‘makes lots of fun’ for us, but because they believe they can learn some essential knowledge from us. And each of our young students has only one life to live. We should therefore be a
H. Behnke
In mathematics you don't understand things. You just get used to them.