1.  On the right is shown how 3 pentominoes (P, U and V) can be put together to fill a rectangle which covers an area of 15 squares. Find at least two other ways of filling a rectangle of the same size with three pentominoes. 

2.  On the right is shown how 4 pentominoes (L, P, T and Y) can be put together to fill a rectangle which covers an area of 20 squares. Find at least two other ways of filling a rectangle of the same size with four pentominoes. 

3.  On the right is shown how 5 pentominoes (L, P, T, U and X) can be put together to fill a rectangle which covers an area of 25 squares. Find at least two other ways of filling a rectangle of the same size with five pentominoes. 
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