Significant Figures are the digits of a number which are used for expressing the necessary degree of accuracy that starts from the first non-zero digit.
The number of significant figures in a result indicates the number of digits that can be used with confidence. The idea of a significant figure is simply a matter of applying common sense when dealing with numbers. An important characteristic of any numerical value is the number of digits, or significant figures it contains. A significant figure is defined as any digit in the number ignoring leading zeros and the decimal point.
Examples of Significant Figures
- 821 has 3 significant figures
- 0.0310 has 3 significant figures
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