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PQRS is a cyclic quadrilateral. If angle...

PQRS is a cyclic quadrilateral. If angle P is four times the `angle R` and `angle S` is three times the `angle Q` , then the sum of `angle Q` and `angle R` is:
PQRS एक चक्रीय चतुर्भुज है | यदि कोण P कोण R से चार गुना है तथा कोण S कोण Q से तीन गुना है, तो कोण Q और R का योग ज्ञात करें |

A

`77^@`

B

`73^@`

C

`81^@`

D

`86^@`

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