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Class 11 Exam  >  Class 11 Questions  >  The significant digits in 0.000532 are:a)2, 3... Start Learning for Free
The significant digits in 0.000532 are:

  • a)
    2, 3

  • b)
    5, 3, 2

  • c)
    0,5,3,2

  • d)
    5, 3

Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
The significant digits in 0.000532 are:a)2, 3b)5, 3, 2c)0,5,3,2d)5, 3C...
There are three rules on determining how many significant figures are in a number: 
  • Non-zero digits are always significant.
  • Any zeros between two significant digits are significant.
  • A final zero or trailing zeros in the decimal portion ONLY are significant.
Keeping these rules in mind, we can say that only 5,3,2 are significant digits.
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Most Upvoted Answer
The significant digits in 0.000532 are:a)2, 3b)5, 3, 2c)0,5,3,2d)5, 3C...
Option B is correct
5, 3 and 2 are significant figures in 0.000532
zero before furst non zero digit from left are always
INSIGNIFICANT
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The significant digits in 0.000532 are:a)2, 3b)5, 3, 2c)0,5,3,2d)5, 3C...
Significant Digits


Significant digits are the digits in a number that carry meaning contributing to its precision. They are used to indicate the reliability of a measurement.


Rules for determining significant digits:



  1. Non-zero digits are always significant.

  2. Zeros between non-zero digits are always significant.

  3. Leading zeros (zeros to the left of the first non-zero digit) are never significant.

  4. Trailing zeros in a number with a decimal point are significant.



Applying the rules to 0.000532:



  • The first non-zero digit is 5.

  • The digits following 5, which are 3 and 2, are non-zero and therefore significant.



So, the significant digits in 0.000532 are 5, 3, and 2.


The zeros before the 5 are leading zeros and do not contribute to the precision of the number, hence they are not significant.
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