Which of these is an EXAMPLE of the null set?
ASet of even prime numbers
BSet of positive integers less than 1
CSet of letters in the word EAR
DSet of even natural numbers between 0 and 4
Answer & Solution
Correct answer: B. Set of positive integers less than 1
There are no positive integers strictly less than 1, so that set is empty. The set of even primes is {2} (not empty); the letters {E, A, R}; and {2} are all non-empty.
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