a man walk 1 km south then 1 km east then 1 km north and he reach starting point how it is possible.
Answers
Explanation:
He is standing anywhere on a circle of latitude about 1.16 miles north of the South Pole.
He walks 1 mile south. Now he is 0.16 miles north of the South Pole.
He walks 1 mile east. A circle with radius 0.16 has a circumference of 1, so after walking 1 mile east he has made one complete circuit of the South Pole.
He walks 1 mile north and is back where he started.
Alternately, he could be standing anywhere on a circle about 1.08 miles north of the South Pole. He walks 1 mile south, and then walks 1 mile east to make two complete circuits of the South Pole, and then walks 1 mile north to get back where he started.
Or he could be standing anywhere on a circle about 1.053 miles north of the South Pole; he walks 1 miles south, walks 1 mile east to make three complete circuits of the South Pole, and then walks 1 mile north and is back where he started.
Or he could be standing anywhere on a circle about 1.04 miles north of the South Pole; he walks 1 miles south, walks 1 mile east to make four complete circuits of the South Pole, and then walks 1 mile north and is back where he started.
Or. . . you get the idea. There is an infinite number of points from which someone could walk 1 mile south, 1 mile east, and 1 mile north, and end up where he started.