Ratio of number of rods to the number of cones is _______ March 17, 2021 – by admin Question: Ratio of number of rods to the number of cones is _______ A. 1:20 B. 1:2 C. 1:1 D. 1:5 Answer» a. 1:20 Note: The above multiple-choice question is for all general and Competitive Exams in India.