Final answer:
To determine the number of numbers in the sequence when you reach 1000, subtract the first term from the last term and add 1. In this case, there would be 1000 numbers in the sequence.
Step-by-step explanation:
To determine the number of numbers in the sequence when you reach 1000, we need to find the number of terms in the sequence. Since the sequence starts at 1 and increases by 1 each time, we can find the number of terms by subtracting the first term from the last term and adding 1.
In this case, the first term is 1 and the last term is 1000. Therefore, the number of terms is 1000 - 1 + 1 = 1000. So, there would be 1000 numbers in the sequence.