How many significant digits does 25000 have?

Answer 1

The number of significant digits in 25000 depends on the context and how the number is presented. If it is written as 25000 with no additional notation, it is typically considered to have two significant digits (2 and 5). However, if it were expressed in scientific notation, such as 2.5 × 10^4, it would clearly indicate two significant digits. If trailing zeros are meant to be significant, it could also be interpreted as having five significant digits if written as 25000.0.