一道英语数学题,求意思和过程There is a line of five lattices.Please use th
一道英语数学题,求意思和过程
There is a line of five lattices.Please use three colour-red,green and black to dye them.Each lattice uses one colour.there are _____ways to dye them without two adjoint lattices both being green .
There is a line of five lattices.Please use three colour-red,green and black to dye them.Each lattice uses one colour.there are _____ways to dye them without two adjoint lattices both being green .
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