Hello Hollyag
1. The operation is x * -2, so the next number would be 32
2. For every letter, a parenthesis is added, so the next subject would be (((((E)))))
3. This is listing the first president to last president, so the next one is James Monroe
4. This is listing the people on the dollar bill, next one would be Ulysses S. Grant
5. Though I am not sure of the next number, the sequence is odd odd even even, so the next number is odd
:)
