+48 In the game Nerdle, a player tries to guess a true equation made up of $8$ symbols, each of which is either $+,$ $-,$ $*,$ $/,$ $=,$ or one of the digits from $0$ to $9.$ A square turns teal if the symbol is correct and in the correct location, magenta if the symbol appears somewhere else in the equation, and black if the symbol does not appear at all in the equation. Javier gets the following result for his first guess:
7*3 + 1 = 28
Which of the following 3-digit numbers could not appear as part of the correct solution?
