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A significant figure is any digit in a number that contributes to its measurement accuracy. Significant figures include all non-zero numbers, zeros between non-zero digits, and sometimes trailing zeros, based on specific rules. Mastering the concept of significant figures is essential for students learning experimental math and science with Vedantu. Significant figures are the digits used for the meaningful representation of a given number. Learn its meaning, rules, and rounding off significant digits with solved examples. Learn how to identify and use significant figures in measurements, calculations, and approximations. Find out the rules, examples, and exceptions for determining the number of significant digits in a number. Significant Figures or Significant Digits are defined as the numbers that contain all certain figures and the first uncertain figure . For example, the length of an object is measured as 123.5m, here 1, 2, and 3 are certain digits and 5 is the uncertain digit, hence, Significant digits are 4 in this case.
