0 votes

The following table represents addition of two six-digit numbers given in the first and the second rows, while sum is given in the third row. In the representation, each of the digits $0,1,2,3,4,5,6,7,8,9$ has been coded with one letter among **A,B,C,D,E,F,G,H,I,J,K,** with distinct letters representing distinct digits.

B | H | A | A | G | F | ||

+ | A | H | J | F | K | F | |

A | A | F | G | C | A | F |

Which among the digits $3,4,6$ and $7$ cannot be represented by the letter **D**?_____

0 votes

D cannot be 7.

G,K,J can be (4,7,3) in this case D=6 or (8,3,7) where D can be 6 again, (7,4,6) where D can be 3.

Please refer to my points 5&6 in the below link for detailed reasoning of what values of G,K,J can be.

https://aptitude.gateoverflow.in/5476/cat2019-1-35?show=7805#a7805