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  • Fully Worked Solutions

    172 Pages·2006·4.94 MB
    1 60 = 2 × 2 × 3 × 5 12 = 7 + 5. 14 = 7 + 7. 16 = 3 + 13 (or 5 + 11). 18 = 7 + 11. 20 = 3 + 17 2  ...
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