Solution:From 1 to 100, 5 appears 20 times.
Similarly, from 101 to 200, 5 appears 20 times.
Similarly, from 201 to 300, 5 appears 20 timess.
Now, we need to check the numbers after 260. Such numbers having 5 are 265, 275, 285, 295 i.e. 4 numbers.
So, the number of 5’s used from 1 to 260
= (20 + 20 + 20) – 4 = 56
