The center and radius of two circles are given.
Determine whether they touch.
Problem with the third test suite
in 3rd case,
they intersect at two points.
In geometry, tangent circles (also known as kissing circles) are circles that intersect in a single point.
Solve the set of simultaneous linear equations
Create a square matrix of multiples
Find out Harmonic mean.
Generate Golomb's sequence
Sky full of stars - 01
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