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In the given figure, PQL and PRM are tan...

In the given figure, PQL and PRM are tangents to the circle with centre 'O' at the points Q and R, respectively and S is a point on the circle such that `angle SQL = 50^(@) and angle SRM = 60^(@)`. Then `angle QSR` is equal to

A

`110^(@)`

B

`60^(@)`

C

`70^(@)`

D

`90^(@)`

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The correct Answer is:
C
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