brazil-enem 2016 Q168

brazil-enem · Other · enem__day2 Permutations & Arrangements Linear Arrangement with Constraints
To stimulate his daughter's reasoning, a father made the following drawing and gave it to the child along with three colored pencils. He wants the girl to paint only the circles, so that those connected by a segment have different colors.
In how many different ways can the child do what the father asked?
(A) 6
(B) 12
(C) 18
(D) 24
(E) 72
To stimulate his daughter's reasoning, a father made the following drawing and gave it to the child along with three colored pencils. He wants the girl to paint only the circles, so that those connected by a segment have different colors.

In how many different ways can the child do what the father asked?

(A) 6

(B) 12

(C) 18

(D) 24

(E) 72