Relative angular speed of two hands of a clock

1. A.
   $\dfrac{2\pi}{60}$
2. B.
   $\dfrac{11\pi}{360}$
3. C.
   $\dfrac{11\pi}{21600}$
4. D.
   $\dfrac{2\pi}{3600}$

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1. A.
   $\dfrac{59\pi}{900}$
2. B.
   $\dfrac{59\pi}{1800}$
3. C.
   $\dfrac{59\pi}{2400}$
4. D.
   $\dfrac{59\pi}{3600}$

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