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Find the smallest set 'Y' such that 'Y ⋃...

Find the smallest set 'Y' such that 'Y ⋃ {1,2}={1,2,3,5,9'}

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The elements .3,5,9. must belong.to .Y. since these are not in .1,2. and are in .d, 2,3,5,9.. Since .Y. is to be the smallest set, we must have .Y={3, 5,9..
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V PUBLICATION-SETS-QUESTION BANK
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  8. Find the smallest set 'Y' such that 'Y ⋃ {1,2}={1,2,3,5,9'}

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  12. If A={4,5,8,12}, B={1,4,6,9} and C={1,2,4,7,8,10}, then find (i) A...

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  17. Prove that A uuB=A nn B if A=B.

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