Correct any entries in the table that are wrong.
Solution: Here, we are going to identify the wrong entry of the significant figures in the given table.
Step1:
The following rules are followed to count the number of significant figures in a particular number:
- All non-zero digits are significant.
- Zeroes between two non zero digits are significant.
- The zeroes preceding to the first non zero number(i.e., to the left of the first non zero number) are not significant.
- All zeroes placed at the end or to the right of a number are significant provided they are on the right side of the decimal point.
- In exponential notations, the numerical portion represents the number of significant figures.
Step2:
Based on the rules given above, we can say that two of the entries given in the table are wrong.
b) 0.00086 has two significant figures [Rule 3]
c) 0.5672100 has seven significant figures [Rule 4]
------------------