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The ratio of three angles of a triangle ...

The ratio of three angles of a triangle is 1 : 3 : 5. Which is the measure of the greatest angle?
त्रिभुज के तीन कोणों का अनुपात 1: 3: 5. सबसे बड़ा कोण का माप क्या होगा ?

A

`100^@`

B

`80^@`

C

`60^@`

D

`120^@`

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