9,999,876 is the greatest seven-digit number using four different digits.
greatest number9999987
98
98765.
987654
9,999,876 is the greatest seven-digit number using four different digits.
greatest number9999987
8642
9,876,543 is.
98
98765.
987654
99,999,987
99,999,876
9876 and 1234
That would be 99987.
999987