0 votes 0 votes A set of $4$ parallel lines intersect with another set of $5$ parallel lines. How many parallelograms are formed? $20$ $48$ $60$ $72$ Quantitative Aptitude gate2018 numerical-ability counting + – gatecse asked Feb 20, 2018 • retagged Mar 14, 2021 by Lakshman Bhaiya gatecse 1.4k points answer See all 0 reply