Question

What is the total number of four digit numbers in the number system?

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Answer 1

Step-by-step explanation:

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Answer 2

4 digits numbers are from 1000 to 9999.

1001 to 9999 , the total numbers (including both 1001 and 9999) = 9999-1001 +1 = 8998 + 1 = 8999.

As 1000 is a 4 digits number which is not included,

.•. No. of 4 digits numbers = 8999+1 = 1000

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