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This magic square has had doors, with operations written in them, opened to make it into a maze.
Start wherever you like and go through every cell using all the numbers, doing the operation indicated to the numbers, and go out through the exit marked in cell $8$ with a total of $15$!
You must use the operations and numbers strictly in the order you meet them. For example, if you try starting at $4$ and go across the top row you must do it like this:
$4\times 9 = 36$
$36 - 2 = 34$
NOT like this:
$4 \times (9 -2) = 4 \times 7 =28$
EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.
Place four pebbles on the sand in the form of a square. Keep adding as few pebbles as necessary to double the area. How many extra pebbles are added each time?