If ABC and DEF are both 3-digit numbers such that A,B,C,D,E and F are distinct non-zero....(CSAT)

Detailed solution and explanation to the UPSC CSE CSAT Question: If ABC and DEF are both 3-digit numbers such that A,B,C,D,E and F are distinct non-zero digits such that ABC + DEF = 1111, then what is the value of A+B+C+D+E+F?

(a) 28
(b) 29
(c) 30
(d) 31

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