Question: In the number 0.007890, how many significant figures are there?
Options:
3
4
5
6
Correct Answer: 5
Solution:
The significant figures are 7, 8, 9, and the leading zeros are not counted.
In the number 0.007890, how many significant figures are there?
Practice Questions
Q1
In the number 0.007890, how many significant figures are there?
3
4
5
6
Questions & Step-by-Step Solutions
In the number 0.007890, how many significant figures are there?
Step 1: Identify the number given, which is 0.007890.
Step 2: Look for the leading zeros. These are the zeros before the first non-zero digit (7 in this case).
Step 3: Count the leading zeros. In this number, there are three leading zeros (0.00).
Step 4: Ignore the leading zeros when counting significant figures.
Step 5: Identify the non-zero digits in the number. The non-zero digits are 7, 8, and 9.
Step 6: Count the non-zero digits. There are three significant figures: 7, 8, and 9.
Significant Figures – Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.
Leading Zeros – Leading zeros are the zeros that precede all non-zero digits in a number and are not counted as significant figures.
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