What is w the p of 100 a w?

It's difficult to understand what you're asking. "w the p of 100 a w" is not a standard mathematical or grammatical phrase.

Could you please rephrase your question? For example, are you trying to ask:

* What is the probability of getting 100 on a "w"? (What is "w"? A dice, a test, something else?)

* What is the value of 100 multiplied by "w"? (What is "w"?)

* Something else entirely?

Please provide more context so I can understand what you're looking for.