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[" 8.If "A={(1)/(x):x in N" and "x<8}" a...

[" 8.If "A={(1)/(x):x in N" and "x<8}" and "B={(1)/(2x):x in N" and "x<=4}" ,find: "],[[" (i) "A uu B," (ii) "A nn B," (iii) "A-B," (iv) "B-A]]

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