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Aleks04 [339]
3 years ago
9

A grid with 3 rows and 52 columns is tiled with 78 identical 2x1 dominoes. How many ways can this be done such that exactly two

of the dominoes are vertical?
Any Idea?
Mathematics
1 answer:
iren2701 [21]3 years ago
6 0
A grid with 3 rows and 52 columns is tiled with 78 identical 2x1 dominoes. How many ways can this be done such that exactly two of the dominoes are vertical?
There are 39 ways that exactly two of the dominoes are vertical.
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