The number A 12345 forms only 14253, 14352, 24 153, 2435 1 34 152, 3425/kloc. 13254, 23 154, and the inverse number, that is, for any five different numbers ABCDE, * * can form a wave number of (6+2)*2= 16. Take 5 numbers from 0, 1, 2, 3, 4, 5: = 6 species, 5 species with 0, 1 species without 0. According to the above table, there are five kinds of * * * in the first place. To sum up, such a wave number is * *16+(16-5) * 5 = 71,with a total of five digits, and the probability is