Those who are fond of figures will find it a most interesting exercise to see how far they are able to represent every number, from one up to a hundred, by the use of four fours. Any of the usual signs and symbols of arithmetic may be brought into use. Here are a few instances of what may thus be done:—
3 = 4 + 4 + 44; 9 = 4 + 4 + 44;
36 = 4(4 + 4) + 4; 45 = 44 + 44;
52 = 44 + 4 + 4; 60 = 4 × 4 × 4 - 4.
No. CVIII.—STILL A SQUARE
This figure, which now forms a square, and the quarter of that square, can be so divided by two straight lines that its parts, separated and then reunited, form a perfect square. How is this done?
A MAGIC SQUARE
Here we have arranged five rows of five cards each, so that no two similar cards are in the same lines. Counting the ace as eleven, each row, column, and diagonal adds up to exactly twenty-six.