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Find the smallest whole number between $$14$$ and $$40$$ that is divisible by $$3$$ and by $$4$$. 
Overseas Competition->Knowledge Point->Number Theory Modules->Factors and Multiples->Common Factors and Common Multiples
Multiple of $$3$$ and $$4$$ also a multiple of $$12$$.  $$12, 24, 36, 48, \cdots $$  Smallest multiple between $$14$$ and $$40$$ is $$24$$. 