Question
There are some lamp posts along a road at equal distances.
The distance between the 3rd and the 7th lamp post is 36 m.
What is the distance between the 1st and the 6th lamp post?
4 m

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There are some lamp posts along a road at equal distances.
The distance between the 3rd and the 7th lamp post is 36 m.
What is the distance between the 1st and the 6th lamp post?