IMAT 2020 Q3 [Dotted Paper]

A piece of paper is laid on a table in landscape orientation (i.e. the longer side running left to right and the shorter side running top to bottom).

This piece of paper is then folded in half four times, alternately by moving the left hand side across over the right hand side and folding, and by moving the top half down over the bottom half and then folding. After each fold a dot is made with a pen in the centre of the face showing on the table.

After the four folds and four dots, the paper is unfolded in the reverse sequence and is then turned over so that the four dots are showing.

What is the pattern of the dots on the paper? (Dotted lines represent the fold marks)

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