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Which of the following is an empty set?

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in Mathematics - Class 11 by (789k points)
Which of the following is an empty set?

(a) The set of dogs with six legs

(b) The set of books in the library

(c) The set of boys in a school

(d) The set of a square with 4 sides

The question was posed to me in exam.

The above asked question is from The Empty Set topic in chapter Sets of Mathematics – Class 11

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Best answer
Right option is (a) The set of dogs with six legs

The best I can explain: Clearly there is no dog in this world with 6 legs hence this makes an empty set.

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