Question
Replace each * by the correct digit in the following:
$
\begin{array}{rrrrrrr}
1 & 0 & 0 & 0 & 0 & 0 & 0 \\
- & & * & * & * & * & 1 \\
\hline & * & 7 & 0 & 4 & 2 & * \\
\hline
\end{array}
$

Answer


In the units place, $10 - 1 = 9;$ Also, in the lakhs place, $9 - 0 = 9$; Addend difference $= 970429.$
    $1000000 $
$ \underline{ -0970429}$
  $00029571$
So, in order to get the addend, we will subtract $970429$ from $1000000.$ Thus, the correct answer is:
   $1000000$
$ -0029571$
   $\underline {0970429}$

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