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Which set lists the natural numbers x satisfying 3x < 12?
A{0, 1, 2, 3}
B{1, 2, 3}
C{1, 2, 3, 4}
D{2, 3, 4}
Answer & Solution
Correct answer: B. {1, 2, 3}
Dividing by 3 gives x < 4, and the natural numbers below 4 are 1, 2 and 3.
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