State the number of significant figures in the following measurements: (a) 23.023 (b) 0.0003 (c) 2.1×10∧-3 (d) 80.
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Explanation:
Zeroes before a digit is not counted as a significant figure. In first number all digits are significant. In number second only 3 is significant all other zeroes are before digit therefore, not counted as a significant figure and numbers in powers are also not counted as a significant number, hence there are only 2 significant digits in the last number.
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