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If the circles given by S-=x^(2)+y^(2)...

If the circles given by
`S-=x^(2)+y^(2)-14x+6y+33=0` and
`S'-=x^(2)+y^(2)-a^(2)=0(a in N)` have 4 common tangents, then the possible number of circles `S'=0` is

A

1

B

2

C

0

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
B
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