Difference of the greatest 7 digit number and smallest 5 digit number is

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998999

9989999

99899

998099

answer is B.

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Detailed Solution

Concept- Find the difference between the largest 7-digit number and the smallest 5-digit number in this case. The largest 7-digit number will be found for that, followed by the smallest 5-digit number. By deducting the smallest 5-digit number from the largest 7-digit number, we can determine their difference.
The largest seven-digit number known to mankind is 9999999, and the smallest five-digit number is 10000.
To determine the difference, we will now subtract the smallest 5-digit number from the largest 7-digit number.
The biggest 7 digit number is equal to the difference between the smallest 5 digit number and the largest 7 digit number._____(1)
The values of the largest 7-digit number and the smallest 5-digit number will now be substituted in equation (1).
⇒ Difference between the lowest five-digit number and the highest seven-digit number

Hence, the correct answer is option 2.

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