The phrase "frivolous question" is correct and usable in written English.
It can be used to describe a question that is not serious or lacks importance.
Example: "During the meeting, he asked a frivolous question that distracted everyone from the main topic."
Alternatives: "trivial question" or "insignificant question".
These often turn out to be more informative than the initial questioner may have envisaged: for example, the somewhat frivolous question "What's the best way to stop Velociraptor attacks?" (http://www.askabiologist.org.uk/answers/viewtopic.php?id=988) attracted six answers.
What the earliest speaking ancestors spoke about is hardly a frivolous question.
How women look, and how their looks change in the course of their lives, is not a frivolous question.
Asked the frivolous question as to which of the dictators he would have preferred spending a weekend with, Bullock replied promptly, "Hitler, because although it would have been boring in the extreme, you would have have had a greater certainty in coming back alive".
Why would this be a frivolous question to investigate?
It's a less frivolous question than it first seems; getting inside the minds of monkeys tells us much about what it means to be a monkey.
But fame did not prevent him from answering some utterly frivolous questions in an interview during his visit to New York this week.
Almost everything else about the Tweel is undetermined at this early stage of development, including serious matters like cost and frivolous questions like the possibilities of chrome-plating.
A couple of weeks ago, when I first tried out the system, I went through a list of serious and frivolous questions, all of which elicited good, or at least reasonable, responses.
Now that it takes us only a few seconds or minutes to get an answer, we ask a lot of frivolous questions (along with the important ones, of course).Taking this effect into account involves estimating a "demand curve for questions" as a function of the "cost of getting answers".
When they tried to register they were confronted by a number of humiliatingly frivolous questions to "test" their literacy, the most infamous of which was "how many bubbles are there in a bar of soap?" When they couldn't answer, they couldn't vote.
