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Mathematics
Problem
The number of common tangents to the circles
x
2
+
y
2
=
4
x^2 + y^2 = 4
x
2
+
y
2
=
4
and
x
2
+
y
2
−
6
x
−
8
y
=
24
x^2 + y^2 - 6x - 8y = 24
x
2
+
y
2
−
6
x
−
8
y
=
24
is (a) 0 (b) 1 (c) 3 (d) 4
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