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This question already has an answer here:

I was wondering what to do if I have abbreviation at the end of a sentence which ends in a question mark.

What is Google inc.?

What is Google inc.

What is Google inc?

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marked as duplicate by jwpat7, aedia λ, Kit Z. Fox Apr 13 '13 at 1:54

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 3 down vote accepted

Use the question mark, even if you have a period before: "What is google inc.?"

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You need to write both. The first example is correct: What is Google Inc.?

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