a man walks i km to east and then he -turns to south and walks 5 km. again he turns to east and walks 2 km. after this he turns to north and walks 9 km. now how far is lie from his stalling point ? (a) 3 km (b) 4 km (c) 5 km (d) 7 km
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The answer is (d) 7km....
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