![](http://www.alamy.com/thumbs/6/F73C0F27-7196-4CFA-97A8-47F98422F2A7/R24GRJ.jpg)
3d rendering blue question mark with white question marks on white background
Size: 5500px × 4125px
Photo credit: © Kittipong Jirasukhanont / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: 3d, banner, blue, challenge, confuse, contest, exam, examinor, faq, game, icon, illustration, letters, mark, problem, query, question, questioner, quiz, quizzer, rendering, sign, symbol, test, thinking