Question

the difference between the largest 5 digit number and the largest 5 digit number with three distinct digits ​

Answer 1

Largest 5 digit no. 99999
Largest 5 digit no. with 3 distinct figures is 99000
Difference 99999-99000=999
Hence answer is 999 is the difference between largest 5 digit no. and largest 5 digit no. with 3 distinct digits