The two circles ${x^2} + {y^2} - 4y = 0$ and ${x^2} + {y^2} - 8y = 0$
The two circles ${x^2} + {y^2} - 4y = 0$ and ${x^2} + {y^2} - 8y = 0$
- A
Touch each other internally
- B
Touch each other externally
- C
Do not touch each other
- D
None of these
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