A) \[{{30}^{o}}\]
B) \[{{40}^{o}}\]
C) \[{{50}^{o}}\]
D) \[{{60}^{o}}\]
Correct Answer: D
Solution :
Here \[p-{{10}^{o}}+p-{{5}^{o}}+p-{{15}^{o}}+p-{{30}^{o}}={{180}^{o}}\]\[\Rightarrow \]\[p=\frac{{{240}^{o}}}{4}={{60}^{o}}\]
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