A man walks 5 km towards the North, then turns right and walks 3 km, then turns right again and walks 5 km. How far and in which direction is he from his starting point?

Question

In a class of 50 students:
30 like cricket
20 like football
15 like both cricket and football
How many students like only cricket?

Answer 1

Use coordinates from (0,0): North to (0,5), East to (3,5), South to (3,0). The final point (3,0) is 3 km East of the origin.

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