Question

How many seven in all digit numbers are there​

Answer 1

Answer:

9000000

Step-by-step explanation:

So total number of 7 digit numbers=9999999 – 1000000+1). Out of 9000000 numbers, 4500000 are having the sum of digits as even and the remaining 4500000 are having the sum of digits as odd. Every alternate number has its sum of digits even and odd. There are 9000000 seven digit numbers.

Answer 2

Answer:

10000

starting from 1000000 to 9999999

Step-by-step explanation:

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