Question

how many 5 digit numbers are there in all​

Answer 1

Step-by-step explanation:

The 1st (smallest) 5-digit number is 10000 and the last (largest) 5-digit number is 99999.

Now, 99999–10000=89999

So the total number of 5-digit numbers are- 89999+1= 90000.....

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Answer 2

Step-by-step explanation:

smallest 5 digit number=10000

largest 5 digit number=99999

therefore

number of 5 digit numbers in all =99999-10000=89999