252
252
252
46000
i think alot like 100 at least
17
There are 9000 4-digit numbers. 8*9*9*9 = 5832 of them do not contain a 5 The remaining 3168 contain a 5.
252
27: 077,177,277,377,477,577,677,877,977,717,727,737,747,757,767,777,787,797
46000
i think alot like 100 at least
17
There are 9000 4-digit numbers. 8*9*9*9 = 5832 of them do not contain a 5 The remaining 3168 contain a 5.
1
-2
-5
-5
It would help to know which digit. 0 appears in 9 numbers and each of the others in 18 numbers.
10293330201309i31841481389