Question

If 1AB + CCA = 697 and there is no carry-
over in addition, find the value of A + B + C.​

Answer 1

Question :- If 1AB + CCA = 697 and there is no carry-

over in addition, find the value of A + B + C.

Solution :-

Given that ,

1 A B

+ C C A

6 9 7

Now, we have given that, there is no carry-

over in addition .

Therefore, Starting from Right side we get,

→ 1 + C = 6

→ C = 6 - 1

→ C = 5 .

Putting value of C now,

1 A B

+ 5 5 A

6 9 7

Now, second from right we have,

→ A + 5 = 9

→ A = 9 - 5

→ A = 4.

Putting value of A also,

1 4 B

+ 5 5 4

6 9 7

Therefore, In left we have,

→ B + 4 = 7

→ B = 7 - 4

→ B = 3.

Hence,

→ A + B + C = 4 + 3 + 5 = 12 (Ans.)

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