"IS" 定 "ARE"? Grammar Confuse

Difference of "There is" "There are"

究竟哪一句對呢?
請問應該用 IS 定 ARE呢？

1.
There IS a pencil, a book and a rubber.
There ARE a pencil, a book and a rubber.

2.
There IS a pencil, two books and three rubbers.
There ARE a pencil, two books and three rubbers.

這個情況是看接著的Noun是否Plural 或是看句子共有幾多個noun呢？