Question

How many four digit numbers are there between 999 and 3000

Answer 1

The four digit numbers between 99 and 3000 range from 1000 to 2999. 

therefore number of four digit numbers
=2999-1000+1
= 2000


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thanks

Answer 2

Answer:

There are 2000 four digit numbers between 999 and 3000.

Step-by-step explanation:

Given :

Four digit number is there from 999 to 3000

To find :

How many four digit numbers were there?

Solution :

Four digit number is there from 999 to 3000 will make an AP

1000 + 1001 + ... + 2998 + 2999

First term = 1000

Last term = 2999

Common difference = 1

The formula to find the number of terms,

$l=a+(n-1)d$

$2999=1000+(n-1)1$

$2999-1000+1=n$

$2000=n$

Therefore, There are 2000 four digit numbers between 999 and 3000.