Question

1. He has more than 100 dollars.
2. He has less than 100 dollars.
3. He has 100 and more dollars.
4. He has 100 and less dollars.
(Are they all grammatical?)

Does #1 include 100 dollars?
Does #2 include 100 dollars?
Are #3 and #4 correct?
Is #2 the opposite of #1?

Answer 1

1 and 2 are fine; 3 and 4 are not normally used.

Answer 2

2 is the opposite of 1