Question

Which of the following is 2.45986 rounded to 3 significant
digits?

Answer 1

The rounded three digits for the given number is 2.46

Step-by-step explanation:

Significant figures are the number of digits in a value which contributes to the degree of accuracy of the value while measuring

Rules:

1. Digits which are not zero are always essential.
2. Any zeros between two major digits are important.
3. Only a final zero or trailing zeros are important in the decimal section

Solution:

• Given number- 2.45986
• Decimals- 5 digits
• Scientific Notation -2.45986 × 10^0
• Applying the rules until rounding the 3 digits we get,
• The rounded three digits for the given number is 2.46