Replace A, B, C by suitable numerals:


Replace ABC by suitable numerals:



​This implies that 1 is borrowed.


$\Rightarrow A=1$

Then, $7-B=9$

1 is borrowed from 7.

$\therefore 16-B=9$

$\quad \Rightarrow B=7$

Further, $5-C=2$

But 1 has been borrowed from $5 .$

$\therefore 4-C=2$

$\Rightarrow C=2$

$\therefore A=1, B=7$ and $C=2$





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