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If l, m and n are three lines concurrent at ‘O’, then the value of ‘y’A) 40° B) 60° C) 100° D) 20° |
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Answer» Correct option is (D) 20° 2y+5y+2y = \(180^\circ\) \(\Rightarrow\) 9y = \(180^\circ\) \(\Rightarrow\) y = \(\frac{180^\circ}9=20^\circ\) Correct option is D) 20° |
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