1. The term "alternate numbers" is not a standard mathematical term, but it often refers to numbers that appear in a sequence by skipping every other number. 2. For example, in the sequence 1, 2, 3, 4, 5, 6, the alternate numbers could be 1, 3, 5 (taking every second number starting from the first). 3. Another interpretation could be numbers that alternate in some property, such as alternating even and odd numbers: 2, 3, 4, 5, 6, 7 where even and odd numbers alternate. 4. If you meant something else by "alternate numbers," please provide more context or an example.