It would help if you proofread your questions before you posted them.
Lacking Data.
Please do not use all caps. Not only is it harder to read, but it is like SHOUTING online. Thank you.
WHAT IS THE FOUR DISIT NUMBER WHOSE GREATEST AND SMALLEST NUMER ,DISITS ARE NOT REAPTING BUT UNIT DISIT 1.
2 answers
IF UNIT IS 1, HOW ABOUT 9871 ?