1. I have difficulty/trouble in remembering names.

2. 1. I have difficulty/trouble when I remember names.

(Are both the same and interchangable?)

1. I have difficulty/trouble in remembering names.

2. I have difficulty/trouble when I remember names.

3. I have ______ remembering names.

(Are both the same and interchangable? Can we delete 'in'? Do you have some other words which can be put in the blank as in #3?)

I think they mean slightly different things.

1. This one means that you have difficulty with the skill of remembering names.

2. This one means that once you have remembered a name, you have difficulty with something else.

No, the two sentences have different meanings and are not interchangeable.

1. "I have difficulty/trouble in remembering names." This sentence means that you struggle or find it challenging to remember names. You may have trouble recalling the names of people you meet or have difficulty retaining the information in your memory.

2. "I have difficulty/trouble when I remember names." This sentence is not grammatically correct and doesn't convey a clear meaning. It seems like there might be a mistake in the structure of the sentence or missing words, making it difficult to understand its intended message.

To address difficulty in remembering names, there are a few strategies you can try:
1. Repetition: When you meet someone new, repeat their name several times in conversation to reinforce it in your memory.
2. Association: Try connecting the person's name with something familiar or memorable, such as their occupation, appearance, or a distinct feature.
3. Visualization: Create mental images or associations in your mind to help remember names. For example, if you meet someone named Lily, create a mental image of a lily flower when you hear their name.
4. Active Listening: Pay close attention when someone introduces themselves and make an effort to remember their name. Avoid distractions and engage in active listening techniques, like repeating their name in your mind while they're speaking.

Regular practice and employing these memory techniques can significantly improve your ability to remember names.