1. i didn't eat applea or pears.

Question

2. i didn't eat applea and pears.
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#1 mean "I didn't eat apples. I didn't eat eat pears, either." Am I right? Then, what about #2? What does #2 mean in the following three sentences? Or would you paraphrase #2 in detatil?(Thank you for your help.)

3. I didn't eat both apples and pears.
4. I didn't eat apples. I didn't eat pears, either.
5. I ate apples, but I didn't eat pears.
Or I didn't eat apples, but I ate pears.

Answer 1

All of these are correct except #3. The word "both" is redundant (unnecessary). "apples and pears" means both without the word "both".