Confused about 2400 power adapter

[David Price]

I was under the impression that a 2400 could run on a Duo adapter, 
but this excerpt from an Apple document has me confused:

M7783 (Duo Adapter)
PowerBook Duo 210, 230, 250, 270c, and 280 computers include a 25 W 
power adapter.

M2693 (Duo Adapter)
The PowerBook Duo 280c included a 36 W power adapter that works with 
all PowerBook Duo computers.

PowerBook 2400
M5937
36 W AC adapter for the Macintosh PowerBook 2400c computer.

I have both adapters, 7783 & 2693. Will either of these power the 
2400? Or do I need to buy the 5937 adapter. I hope not!! Thanks.