Write the greatest and smallest number by using any one digit twice using the given digits
$3, 6, 8, 7$

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Solution

Step 1 :Calculate the Greatest number-
Arrange the given digits as largest to smallest- $8, 7, 6, 3$
As we can repeat a digit so repeat the largest digit to get greatest number- $8876$
Step 2 :Calculate the Smallest number-
Arrange the given digits as smallest to largest- $3, 6, 7, 8$
As we can repeat a digit so repeat the smallest digit to get smallest number- $3367$
Hence the Greatest number- $8876$ and Smallest number- $3367$

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