Final answer:
To round a number to the nearest thousandth, look at the digit in the thousandths place and the digit immediately to the right of it; round up if the digit in the thousandths place is 5 or greater, round down if it is less than 5.
Step-by-step explanation:
To round a number to the nearest thousandth, we need to look at the digit in the thousandths place and the digit immediately to the right of it. If the digit in the thousandths place is 5 or greater, we round up. If the digit is less than 5, we round down.
In this case, the first three terms of the sequence are not provided, so we cannot determine which rounding result is correct.