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Seven people, A, B, C, D, E, F and G are sitting in a row, facing north. Only five people sit between A and F. G sits third to the left of F. E is the immediate neighbour of B and F. C is not the immediate neighbour of G. How many people sit between C and E?
One
Two
Three
Four
Three
Fix the positions of F and A first using the extreme ends, place G third to the left of F, then position E between B and F to uniquely determine the full linear sequence.
Fix the positions of F and A first using the extreme ends, place G third to the left of F, then position E between B and F to uniquely determine the full linear sequence.
Step 1: Determine row endpoints
There are 7 people in total. Since exactly 5 people sit between A and F