Question 19
A teacher puts three distinct colors from blue, red, purple, yellow, pink, brown in three positions. Correct color+position scores $3$; correct color wrong position $1$; absent color $0$. Guesses: An (blue, red, yellow) scores $3$; Binh (purple, brown, pink)$2$; Chau (blue, yellow, purple)$2$; Dung (pink, brown, yellow)$6$; Giang (red, purple, yellow)?. Find Giang’s score.
