take a shot in the dark

To make a guess or estimate with very little or no assurance as to its accuracy. I had absolutely no idea what the answer was for the last question on the exam, so I just took a shot in the dark and hoped for the best.

Common Names:

Name	Pronounced	Usage
Inanna	i-NAH-na	Near Eastern Mythology
Ilia	eel-YAH (Russian)	Georgian, Russian, Bulgarian, Old Church Slavic
Dilip	-	Indian, Hindi, Marathi, Gujarati, Bengali, Kannada, Tamil, Telugu, Malayalam
Cystennin	-	Welsh
Barton	['ba:tən]
Gulshan	-	Indian, Hindi, Urdu