dichotomous question
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Related to dichotomous question: Open ended question
dichotomous question
n
(Logic) a question to which there can only be one of two answers, often "yes" or "no"
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014