I choose to install Ubuntu from Windows installer. My question is I don't know whether it is a 64-bit version 32bit version. Could any body tell me what version it is? What I want is 32-bit version cause I have a 32-bit CPU
I assume that a Wubi Ubuntu is still Ubuntu, so the answers to this question should work for you: How do I check if I have a 32-bit or a 64-bit OS?
I would suggest going with the second method outlined in the "checked" answer which I have copied below.
Open a terminal window and then enter and run the command
If you have the 32-bit version of Ubuntu the result should contain
If you have the 64-bit version of Ubuntu the result should contain