what are four and five?
Nine.
Nine.
A Monkey, A Donkey And A Turkey you Can't Stuff any of them into a Keyhole.
They were triplets!
A dry humper!
Potato.
A hare brain!
11
Sandals.
A seesaw.
6
The series is spaced incorrectly. When the spacing is correct it becomes: 2 4 8 16 32 64 128 256, which is an obvious doubling-up series.
A sponge.
Ton