Please explain how first, second, third and so on cousins work?

Question

Also what does ‘once and twice removed’ cousins work in that context?

In: 14

Answer 1

It is by successive generations. Let’s say you have a brother or sister. Their kids and your kids will be cousins. If they have kids (your grandchildren and your sibling’s grandchildren) they will be second cousins. In the next generation, your great grandchildren and your sib’s great grandchildren will be third cousins. And so on.