Question

Round off 17.9915 to five significant digits

Answer 1

To round off 17.9915 to five significant digits, we need to look at the first five digits in the number, which are 1, 7, 9, 9, and 1. The next digit (to determine whether to round up or keep the same) is 5.

Since the sixth digit is 5, we round the last digit (1) up by 1. Therefore, 17.9915 rounded to five significant digits becomes:

**17.992**