Question

Write the greatest number of $8$-digits and $7$ digits. Find their sum.

Answer 1

We know that, the greatest $8$ digits number is $99999999$ and the greatest $7$ digit number is $9999999$.

Now, according to the question we need to find their sum.

$CrTLLTThThHTO99999999+9999999109999998$

Hence, the sum is $109999998$.