9876 - 123= 9753
8888
The largest 4 digit number with repetition is 9999. The smallest 3 digit number without repetition is 102 9999 - 102 = 9897
9999
9999 - 102 = 9897
9774
1
9999-1023 = 8976
9999 - 102 = 9897
Largest four digit number with repetition = 9999 = x (let) Smallest Three digit number with repetition = 111 = y (let) Answer = x-y = 9999-111 = 9888 -----------------(Ans.)
If you consider whole numbers, the largest 5 digit number with repetition is 99999 the smallest 4 digit number without repetition is -9876 Their difference is 99999 - (-9876) = 99999 + 9876 = 109875.
9876-102 9704
9876-102=9774The largest 4 digit number, without repetition, is 9876.The smallest 3 digit number is 102.Their difference is 9774.