Mathematics · Permutations and Combinations
Let n be an integer. Suppose that there are n Metro stations in a city located around a circular path. Each pair of the nearest stations is connected by a blue line only, whereas all remaining pairs of stations are connected by a red line. If the number of red lines is 99 times the number of blue lines, then the value of n is:
- 1199
- 2101
- 3200
- 4201✓
Correct answer
201
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