Answer:
The value of 25 is dependent upon the base. By default, we read 25 as 25 in base 10 (decimal), being 2*10 + 5*1. However, 25 is also a valid hexadecimal number with a very different meaning, being 2*16 + 5*1. Universally, we could say that the value of 25 is 2*(base^1) + 5*(base^0).
