"common conundrum" is correct and usable in written English.
It is an expression used to describe a problem that is difficult to solve or a confusing situation. For example, "The common conundrum of how to balance work and family life is something that many people struggle with."
The challenge facing Jazz at Lincoln Center - taking chances while paying the bills - is the common conundrum facing arts organizations as they expand.
It's a common conundrum in India, which has a population four times larger than that of the United States in a territory about a third as big.
Morgan Stanley's McIntyre said that is a common conundrum among baby boomers who came from "mothers and fathers who were generally pretty hush, hush about money.
A common conundrum for educators in computer science or electrical and computer engineering is how to assess students' mastery of programming concepts.
In the Middle Ages, as now, we really find a cluster of several related problems radiating from a single common conundrum or paradox.
A common conundrum reported by all informants, for example, was the formidable number of test takers taking their tests every year, an issue which has been repeatedly raised by many testing researchers when discussing language testing in the Chinese context (see e.g., Cheng, 2008; Cheng and Curtis, 2010; Jin, 2010; Li, 1997).
One of the most common conundrums that organizations face is why their diversity and inclusion (D&I) programs are ineffective.
Start preparing now to avoid common conundrums that trip up small businesses and prevent meticulous strategies from going as planned.
It solves common conundrums like what to do if you realise in the park that you've left something in your room.
Marshall serves up common conundrums, balancing two swirling, elusive worlds, equal, opposite, science, the mystical, in one smartly written package.
The follow-up was, "Because a strong enough force will simply obliterate the immovable object, and you will no longer care about whether or not it moves". That common philosophical conundrum has a physics answer.
