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There are two circles whose equation are `x^2+y^2=9` and `x^2+y^2-8x-6y+n^2=0,n in Zdot` If the two circles have exactly two common tangents, then the number of possible values of `n` is (a)2 (b) 8 (c) 9 (d) none of these

A

2

B

7

C

8

D

9

Text Solution

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The correct Answer is:
Hence, number of possible values of n is 9.
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