Find the difference between the smallest 5-digit number and the greatest 5-digit number formed by using the digits 6, 8, 2, 5 and 9 (using each digit only once).

39576

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56293

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72963

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27936

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Solution

The correct option is C 72963
For forming the greatest 5-digit number with the given 5-digits using each digit only once, we have to arrange the given digits in descending order.
The greatest 5-digit number = 98,652.

For forming the smallest 5-digit number with the given 5-digits using each digit only once, we have to arrange the given digits in ascending order.
The smallest 5-digit number = 25,689.

Difference = 98,652 - 25,689 = 72,963.

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