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30 equally spaced points on periphery of a circle are labelled from 1 to 30. Which is diametrically opposite to 7?

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Thirty equally spaced points on the circumference of a circle are labelled in order with the numbers 1 to 30. Which number is diametrically opposite to 7?

posted May 22, 2017 by anonymous

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1 Answer

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Diametrically opposite to 1 is the number 16 (ie., 1 + 15 (half of the total number of points))
So the point diametrically opposite to 7 would be 7+15 = 22.

answer May 22, 2017 by Tejas Naik

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