Question

How many 8-digit numbers are there in all?​

Answer 1

Answer:

ninety million

Total number of 8-digit numbers

There are a total of ninety million different 8-digit numbers.

Answer 2

Answer:

The largest 8- digit number = 99999999

The smallest 8 digit numbers = 10000000

Number of all 8- digit numbers =

$(99999999 - 10000000) + 1$

$= (89999999 + 1) = 90000000$

$9 \: crores$

Hence, there are in all nine crores of 8 digit numbers.

Hope it helps♥.