Instructions

In the following questions, a question is followed by data in the form of two statements labelled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions.

Question 18

What is the number of common tangents to the two circles?
I) The number of points common to the two circles is 0.
II) The radii of the two circles are in the ratio 3 : 4

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