If I am a sibling of 4(All born at once.) am I likely to have four children born at once?

Sorry but , each child us born at a time and so 'born at once' cannot be a true statement. But in hypothetical terms , no. This is because the birth of twins , triplets , or four children is not passed through the gene although it is possible at a normal rate with the possibility of having children. However , ( I'm not going into the 'sperm' talk ) you will have a higher possibility of having more than one child.