Chatting up this girl on pof. She's says drinks later on in the week are indubitable for her at this point. Then I kind of half ass asked for her number in an indirect way. oops.
So she basically laughs and asks if I am trying to get her number. (it's been a very playful report up to this point)

Should I respond with a neg? Is this a fair way to handle these tests.

''Yes I am, why? Does this not happen to you that often?'' etc.

Or should I just say I don't really care how we exchange information. and offer her my number.

Either way I've heard that showing indifference is the best way to go.

If I've correctly understood the meaning of indubitable then this shouldn't be something you overthink.

If you said the tone has been playful so far, keep it that way.