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How many 7-digit numbers are there in all? - Mathematics

Sum

How many 7-digit numbers are there in all?

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Solution

The largest seven-digit number = 9999999
The smallest seven-digit number = 1000000
Number of all seven-digits numbers = (9999999 − 1000000) + 1
= 899999 + 1
= 9000000
Hence, there is a total of ninety lakh 7-digit numbers.

Concept: Comparing Multiple Digit of Numbers
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APPEARS IN

RS Aggarwal Class 6 Mathematics
Chapter 1 Number System
Test paper 1 | Q 5 | Page 21
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