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How would you please naturally say these sentences?

1 There won't be that big a difference in weight between if you put it in and/or/than if you don't.
2 There won't be that big a difference in weight if you put it in or if you don't.

3 What's the difference between leaving it and/or not.
4 What's the difference if you leave it or not.

Thank you
Comments  
1 There won't be that big a difference in weight whether you put it in or not.
2 There won't be that big a difference in weight if you put it in or not.
3 What's the difference between leaving it or not.

4 What's the difference if you leave it or not.

Alternatively:

The will only be small difference in weight whether you put it in or not.

I can sometimes be 'better' to word it in a more positive way instead of say "won't be big" that it "will be small".
Here are some suggestions:

1 There won't be that big a difference in weight between if you put it in and/or/than if you don't.
There won't be that big a difference in the weight whether you put it in or don't.

2 There won't be that big a difference in weight if you put it in or if you don't.
Putting it in won't make that big a difference in the weight.

3 What's the difference between leaving it and/or not.
What's the difference between leaving it in or taking it out?

4 What's the difference if you leave it or not.
Is there a real difference in the weight if you do or do not add it in?
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Thank you

Wouldn't it be

"What's the difference between X AND Y and not X OR Y"

Thank you
If you are trying to make a formula, I don't think you capture the question with

"What's the difference between X AND Y and not X OR Y"

So let me rephrase the question:
"What's the difference in weight between adding it in and leaving it off?"
That looks to me like the difference between (X + Y) and (X).
What I was trying to say is that

you are supposed to use AND and not OR
in
What's the difference between leaving it in or taking it out?

RIGHT?

Thank you
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Could you also please tell me if this makes sense?

1 Is there a difference for you in feeling when you've shaved and have no beard than we you haven't and have a long beard when kissing someone.

There are 2 WHENS??

Just like this one I'm having trouble phrasing?


2 When there is a 10 year difference between the man a woman when the man is 40 and the woman 30, it's not as shocking as if they were 25 and 15 years old respectively.

Thank you so much
Yes, use AND when you are comparing two items. Use OR when you are considering alternatives.
1 Is there a difference for you in feeling when you've shaved and have no beard than we you haven't and have a long beard when kissing someone.
You need to align the phrases (so the "whens" introduce the same sort of items):
"If you are kissing someone, do you feel a difference between when you've shaved and have no beard and when you haven't shaved and have along beard?"

2 When there is a 10 year difference between the man a woman when the man is 40 and the woman 30, it's not as shocking as if they were 25 and 15 years old respectively.
Try this:

A ten year age difference between a man and a woman is not as shocking when the man is 40 and the woman is 30 as when one is 25 and the other is 15.
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