1.

What is the ratio of the mean proportional between 4.8 and 10.8 and the third proportional to 0.4 and 2.4?

A. 1 ∶ 2
B. 2 ∶ 1
C. 3 ∶ 2
D. 2 ∶ 3
Answer» B. 2 ∶ 1


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