Final answer:
Yes, there are infinitely many numbers between 999/1000 and 1 since the set of real numbers is dense, meaning between any two numbers, there are infinitely many others. Therefore, the correct option in the final answer is: a) Yes.
Step-by-step explanation:
The question asks whether there are any numbers between 999/1000 and 1. In mathematics, we deal with continuous quantities, and between any two distinct rational or real numbers, there exists an infinite quantity of numbers. Given that 999/1000 is 0.999 and less than 1, there is indeed a range between these two numbers which contains infinitely many decimal values.
For instance, 0.9995 is a number that falls between 999/1000 and 1. In this particular case, the concept of significant figures or scientific notation is not directly relevant to the question, but understanding that the set of real numbers is dense (meaning between any two numbers there are infinitely many others) is crucial.
Therefore, the correct option in the final answer is: a) Yes.