Destinyoliver7478 Destinyoliver7478

23-09-2017
Mathematics

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Six identically shaped place mats, marked a, b, c, d, e and f, are piled neatly in a stack. how many arrangements are possible if a and b must touch each other?

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mimi123nice mimi123nice

23-09-2017

6
1. A, b, c
2. A, b, d
3. A, b, e
4. C, a, b
5. D, a, b
6. E, a, b

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