Given the number 0.00210, only the last 210 digits are considered significant. Therefore, the specified number has 3 significant digits.
The significant digits of a given number are the significant or significant digits that convey meaning depending on its precision. For example, 6.658 has 4 significant digits. These substantive digits give precision to numbers. Also called significant digits.
All non-zero digits are valid. 198745 has 6 significant digits.
All zeros between two non-zero digits are valid. For example, 108.0097 has 7 significant digits.
All zeros to the right of the decimal point and to the left of non-zero digits are never significant. For example, 0.00798 contained 3 significant digits.
All zeros to the right of the decimal point are significant only if not followed by non-zero digits. For example, 20.00 has 4 significant digits.
All zeros to the right of the last non-zero decimal place are valid. For example, 0.0079800 has 5 significant digits.
All zeros to the right of the last non-zero digit are valid if they come from the measurement.
Learn more about significant figures here https://brainly.com/question/17903415
#SPJ9