Question

how many 4 digit numbers in all are there in base 10 system​

Answer 1

Answer:

the total four digit number in decimal system is = 9 x 10 x 10 x 10 =9000.

Answer 2

Answer:

Largest 4 digit number=9999

Smallest 4 digit number=1000

So,Total 4 digit numbers=(9999-1000)+1

=8999+1=9000

Step-by-step explanation:

First to find the number we have to subtract the largest number from the smallest number.

Then we have to add 1

This because when we subtract something for example (10-2) then we start counting from 3 but not 2 and thus we get 7 which is lesser than eight.

Here is the same thing

We are getting a lesser number

So we have to add 1 to get the correct number.

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