Numbers with Infinite Significant Figures: Exact Definitions

An exact number has no uncertainty and infinite significant figures. If there are 6 people in a closed room, 6 is an exact number. Think of it as 6.0000000...zeros on to infinity. These numbers are the result of a count or a definition, not a measurement. Learn how to recognize exact numbers and how to calculate with them.

Time Stamps:
0:00 Introduction
0:47 How to recognize exact numbers
2:05 Measured values have finite sig figs
2:48 How to recognize exact definitions
3:21 Look for "Exact" or "Exactly"
3:51 Unit Conversion with an Exact Definition (3280 m to km)

#SignificantFigures #SigFigs #Chemistry

[algebraorcalculas]

That's what I was searching for.."!
Thanks 👍

[jennijubilant]

great video, very concise explanation! thank you.

[sizu]

1 m has infinite significant fig or just 3?

[kichwaotavalo]

3280m has 4 sig digs right? But how come you said 3? Thanks 😊

[Ibrahim_Ezzeddine]

Why do they have unlimited sig figures is it because you can have multiple amount after the decimal point of an exact number?