Since its invention in the 1970s, there have only been a few things that have revealed the limits of problem solving skills in humans faster than a Rubik’s Cube. The 3D multicoloured, logic puzzle has ...
Over the last few weeks we have discussed different methods of finding the squares of numbers. Now let us look at easy methods to find the cube of two-digit numbers. As with squares, a prerequisite is ...
An Armstrong number is one where the sum of the cube of each digit of the number is equal to the number itself. For example, consider 153. Here the cube of 1 = 1 ...
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