Numbers aren't adding up when using default

[John1]

Hello! I was wondering if someone can help me with this question.

So I sent out an email, let's say the criteria for this is Region Segment is APAC and the Job segment is: Bakers and let's say the total send list size for this is 10 people (making this up)

And let's say I am sending another email with the same criteria except Region and Job segment is default and the total send list size for this is 50.

But if I combine these two together, so Region is APAC and Default And Job Segment is Bakers and Default, the number is much higher like, 100 (also made up but the difference is significantly larger).  Is this normal? I would think that the number will be 60 since all I am doing is adding in the an extra value but this seems like a huge jump

[SanfordWhiteman]

I think you should post screenshots of the actual Smart Lists. This'll be more helpful than hypotheticals. Make sure to include the whole Smart List pane.