Which of the following is an example of the n | vedclass

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(B) null set (or empty set) is a set that contains no elements.Consider the set $A = \{ x : x \in \mathbb{N}, x  7 \}$.For a natur

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$\{ x : x \in \mathbb{N}, x  7 \}$

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(B) null set (or empty set) is a set that contains no elements.Consider the set $A = \{ x : x \in \mathbb{N}, x  7 \}$.For a natural number $x$ to be in this set,it must satisfy both conditions: $x  7$ simultaneously.There is no natural number that is both less than $5$ and greater than $7$.Therefore,the set $A$ contains no elements,which makes it a null set.

Which of the following is an example of the null set?
$\{ x : x \in \mathbb{N}, x < 5 \text{ and } x > 7 \}$

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Which of the following is an example of the null set?$\{ x : x \in \mathbb{N}, x < 5 \text{ and } x > 7 \}$