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What mystery number has 8 digits; none of the digits are the same. It is evenly divisible by 10. The value of one of the digits is 80,000. The digits in the millions place is the largest 1-digit odd number. The digit in the thousands place is 3 less than the digit in the millions place. The digit in the hundreds place is half the digit in the thousnds place. The digit in the tens place is 2 more than the digit in the ones place. The digit in the hundred thousands place is the largest single-digit factor of 25. The digit in the ten millions place is an even number. What is the mystery number?

• math -

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- evenly divisible by 10 -- the unit digit must be 0
- The digits in the millions place is the largest 1-digit odd number -- the second digit from the left must be a 9
- The digit in the thousands place is 3 less than the digit in the millions place --- it must be a 6

keep going this way.

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