7digit number 8,920,000 when rounded to nearest 10 thousand. digits in tens & hundreds are the least & same value. value of thousand digit is double that of ten thousand digit. sum of all digits is 24

First we can conclude that the number is:
8,9 x x, x x x ( 7-digit number ) and the value of ten thousand digit it 1 or 2. But if value of thousand digits must be the double of the value of ten thousand digits, then the number is:
8,924, x x x ( because it can not be 8,912, x x x - that number should be 8,910,000 rounded to a ten thousand digit ).
Then tens and hundreds are same and the least value. That value is zero.
8,924,00 x.
Finally, we add up all values and subtract it from 24.
24 - ( 8 + 9 + 2 + 4 + 0 + 0 ) = 24 - 23 = 1

This number is 8,924,001.  

Step 1: 6x-10=1; step 2: 6x=11

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