Karolína chose 5 bodies from the kit - white, blue and gray cubes, a blue cylinder and a white triangular prism. How many different roof towers can be built one by one if all the blue bodies (cube and cylinder) are not placed on top of each other?

Correct answer:

n =  18

Step-by-step explanation:

n=1 4 3 2 13 1 1 2 1=18

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