Introduction - If you have any usage issues, please Google them yourself
【 Procedure 1 】
Topic:1,2,3 and 4 piece words, can constitute how many with each other not same and three number that have no repetition numeral?Are all how much?
1.Procedure analysis:Can fill at 100 are all 1,2,3 and 4.Throw away again the conditional alignment of dissatisfied foot after constituting all alignments.