Question

how many 4 digit number in all are there in base 10 system

Answer 1

Hi dear here is your answer

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

Hope its help you

Answer 2

Answer:

There are 9000 four digit numbers in all.

Step-by-step explanation:

The formula that we are going to use for solving this question is as follows:

(Greatest four digit number) + 1 - (Smallest four digit number)

The greatest four digit number = 9999

Smallest four digit number = 1000

Total four digit numbers = (9999 - 1000)+1

                                        = 8999 + 1

                                        = 9000

Therefore, there are 9000 four digit numbers in all.