984
198 is the greatest three-digit even number that has no factor equal to 4.
Th e greatest 4-digit even number is 9,998 .
9998
9998
There is no greatest multiple of any number: whatever multiple of 4 you say is the greatest I can always add 4 and get an even greater multiple.
90000
The greatest 4-digit number with no repeated digits is... 9876
7,543
The smallest 5 digit odd number is: 10001 The greatest 4 digit even number is: 9998 Subtracting 9998 from 10001 gives you 3.
75,431
1324
998