4. Which of the following sets is a null set? A. The set of counting numbers between 1 and 2 B. The set of months with 29 days C. The set of vowels in the English Alphabet D. The set of letters in the word "classroom”
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The null set is A) The set of counting numbers between 1 and 2.
Explanation:
- Set is a collection of well-defined objects or elements.
- Set of Counting numbers between 1 and 2: The symbol Ф is used to denote a null set. Counting numbers are also called natural numbers. Since, there is no natural between 1 and 2, the given set is a null set.
- The set in option (B) has 11 elements, the set in option (C) has 5 elements and the set in option (D) has 7 elements. Hence, these options are not a null sets.
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