11/20/12
give the number of elements in the region
Give the numbers of elements in the regions marked I, II, III, IV, V, VI, VII, VIII in the figure.
|U| = 200, |A| = 25, |B| = 18, |C| = 32 |A∩B| = 4, |A∩C| = 2, |B∩C| = 7, |A∩B∩C| =2
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