Which of the following is 2.45986 rounded to 3 significant

digits?

The rounded three digits for the given number is 2.46

Explanation:

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

Rules:

Digits which are not zero are always essential. Any zeros between two major digits are important. 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