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If A={1,2,3},\ B={2,4,5,6}a n d\ C={1,3,...

If `A={1,2,3},\ B={2,4,5,6}a n d\ C={1,3,5,7},\ t h e n\ U={1,2,3,4,5,6,7}` can be taken as the universal set.

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As we know `U=A∪B∪C`
` U={1,2,3,4,5,6,7}` can be taken as the universal set.
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