Understanding the link between ratios and fractions is a valuable skill to practise. There are nine circles. 4 circles are orange and 5 circles are blue. Find the fraction of orange circles, the ...
IN 1902 Prof. W. W. Beman, of the University of Michigan, pointed out (“L'Interm diaire des math maticiens,” T.9, Paris, p. 229, question 2424), that the colon (:) occurs as a designation of geometric ...
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