tobbs9862 tobbs9862 27-12-2023 Mathematics contestada Each of the letters a, b, c, d, e, and f stands for one of the numbers from 1 to 6. If a × d = f, a+d=b, a+e=c, which letter stands for 4? 1) a 2) b 3) c 4) d 5) e 6) f