MathDB

It is about deciphering the code

C_1C_2C_3C_4

in which each letter is one of the colors: white

(B)

, blue

(A)

, red

(R)

, green

(V)

, black

(N)

and brown

(C)

with allowed repetitions. Four were made attempts to decipher it.

NAVB

and

ACRC

have two color hits, but in wrong places.

RBAC

and

VRBA

have one color match in the correct place, and two other color matches, in places incorrect. Determine all combinations compatible with the information.

Problem Statement