8642
The greatest 4-digit number with no repeated digits is... 9876
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11
8642 is the greatist number if all the numbers are not the same and even
Some confusion as to whether it is "I" or "you". The number in question is 8642
9999
9,999,876 is the greatest seven-digit number using four different digits.
9,999 is the greatest four digit number.
9999
90001smallest six-digit whole number= 100000greatest four-digit whole number = 9999100000 - 9999 = 90001
9801.