(You need an apostrophe between the "n" and the "t" in "don't.") Usually, I would say "I don't have the address or the location." So #1 is correct. It's clear, and it's natural. In real life, if I wanted to be even clearer, I would say "I need the address and the location." This makes it clear that I expect TWO pieces of information. It also avoids all questions about the usage of "either," "neither," "or," and "nor." #2 is wrong. The word "either" is in the wrong position. #3 is wrong. The word "neither" is in the wrong position. If we wanted to be very clear or slightly formal, I would say "I don't have either the address or the location." I could also say "I have neither the address nor the location." #4 is wrong. We can make it correct by adding two words: "I don't have the address, nor do I have the location."

None are correct. Even worse, they are unclear. In most contexts, we would think of ‘address’ and ‘location’ as the same information! So they’re all just confusing. I have neither the address nor (the) phone number. (Correct, pretty formal) I don’t have the address or (the) phone number. (Ok, not that polished) I need/lack the address and (the) phone number. Please give me the address and (the) phone number. Generally, there’s need to double up on the article. I would omit the second ‘the’ in every case, but it’s not wrong to use it.

neither the address nor the location

1. is correct. 2. EITHER is incorrectly used. to use either, you'd have to say something like: "I don't have the address. I don't have the location either." 3 and 4. I'm not 100% positive that theyr're wrong, but they're unnatural. Usually NEITHER and NOR go together, so the correct version would be something like, "I have neither the address nor the location"

The correct sentence is: 4. I don't have the address nor the location. However, the most natural and commonly used construction would be: I don't have the address or the location. Here's an explanation of each sentence: 1. I don't have the address or the location. * This is correct and sounds natural to a native speaker. It uses "or" correctly in a negative context. 2. I don't have the address either the location. * This is incorrect. "Either" is typically used with "or" (e.g., "I don't have either the address or the location"). 3. I don't have the address neither the location. * This is incorrect. "Neither" should be paired with "nor" (e.g., "I have neither the address nor the location"). 4. I don't have the address nor the location. * This is technically correct, but it can sound a bit formal or awkward to some native speakers. "I don't have the address or the location" is more natural.