Write the smallest and greatest $7$ digit number.

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Solution

The smallest $7$ digit number is $1000000$ because as soon as we subtract $1$ from $1000000$ we get $6$ digit number $(1000000 - 1 = 999999)$
The largest $7$ digit number is $9999999$ because as soon as we add $1$ to $9999999$ we get $8$ digit number $(9999999 + 1 = 10000000)$
Hence- The smallest $7$ digit number is $1000000$ and The largest $7$ digit number is $9999999$

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