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Question
A city is planned in such a way that every 5 km has a circle and has 4 signals around.
So, can you guess where the signals and circle are there?
How many signals are needed for a 20 km distance?
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Solution
4 signals + 4 signals + 4 signals + 4 signals = 16 signals
There are 16 signaIs àre needed for a 20 km distance.
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