The phrase "a number of puzzling" is correct and usable in written English.
It can be used when referring to multiple confusing or perplexing items, situations, or questions.
Example: "There are a number of puzzling aspects to this mystery that we need to investigate further."
Alternatives: "several perplexing" or "many confusing".
Observations of Sedna quickly raised a number of puzzling questions.
Two turnovers, a blocked punt and a number of puzzling drops: that's what they should talk about.
The results provide further evidence that reason and emotion often compete inside the brain, and it also helps explain a number of puzzling phenomena, such as the popularity of Christmas savings accounts, which people contribute to throughout the year.
A number of puzzling optical effects, first observed in the mid-17th century, were resolved when light was understood as a wave phenomenon and the directions of its oscillations were uncovered.
No mean multitasker herself, Reichs balances glimpses of Tempe's personal life (notably her on-and-off affair with a sexy Canadian homicide cop) with a number of puzzling cases and some nasty incidents of professional sabotage, starting with the career-damaging charge that Tempe botched the autopsy of a Chicago heiress.
When applied to the media landscape today, it brings to the fore a number of puzzling and complex questions: Are newspapers alive or dead?
Lewis argues that this model can make sense of a number of otherwise puzzling features of language.
Attention is also a topic of philosophical interest because of its apparent relations to a number of other philosophically puzzling phenomena.
A number of the posts contained puzzling statements that became the subject of much discussion on the Internet starting Friday, including a message in February about killing Abraham Lincoln during a two-hour nap.
Parameters were estimated using the "exact" and "quartet sampling + NJ tree" options and the number of puzzling steps were automatically decided by Treepuzzle and varied between 1000 and 25000 depending on the dataset.
The number of puzzling steps was 1000 in each phylogenetic analysis.
