公こう比ひこうひじ字FuriganaMeanings1nouncommon ratio; geometric ratiomathematics›Mathematical term for the constant ratio between consecutive terms in a geometric progression.等とう比ひ数すう列れつの公こう比ひを求もとめなさい。Find the common ratio of the geometric sequence.この数すう列れつの公こう比ひは