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Question

Form the largest and smallest 4-digit numbers using each of the given digits only once:

3,9,8,5


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Solution

Find the largest and smallest 4- digit numbers:

Rule 1: To form the largest number, the digits are arranged in ascending order from one place. So, now we will place the smallest digit at the one place that is 3 and the order will follow 9>8>5>3.

Hence, the greatest number would be 9853.

Rule 2: To form the smallest number, the digits are arranged in descending order from the one place. So now we will place the largest digit at the one place that is 9 and the order will follow 3>5>8>9.

Hence, smallest number would be 3589.

Thus, the largest number is 9853 and smallest number is 3589.


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