If 1:2 is related as 2:4, then which of the following pairs is similarly related?

A. 3:6
Posted in:  Number Analogy -  Analogy -  Verbal Reasoning

If 3 : 9 is related as 4 : ?

A. 12
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If 12 : 144 is related as 10 : ?

A. 100
Posted in:  Number Analogy -  Analogy -  Verbal Reasoning

If 15 : 45 is related as 20 : ?

A. 60
Posted in:  Number Analogy -  Analogy -  Verbal Reasoning

If 10 : 100 is related as 12 : ?

B. 144
Posted in:  Number Analogy -  Analogy -  Verbal Reasoning