How many significant figures are represented by the following number that is written in scientific notation? 2.5 ×

Question

Quizplus · Accepted Answer

The significant figures in a number are all the digits that are known with certainty, plus one digit that is uncertain or estimated. In this case, the number is written in scientific notation as 2.5 × 10^11, which means that there are two significant figures: 2 and 5. The exponent 11 indicates the magnitude of the number, but it does not affect the number of significant figures. Therefore, the answer is C) 2.

How Many Significant Figures Are Represented by the Following Number