1 votes 1 votes The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is $6$ $9$ $12$ $18$ Quantitative Aptitude isi2018-dcg quantitative-aptitude number-system geometry parallelograms + – gatecse asked Sep 18, 2019 • recategorized Nov 19, 2019 by Lakshman Bhaiya gatecse 484 views answer comment Share Follow See 1 comment See all 1 1 comment reply `JEET commented Oct 1, 2019 reply Follow Share Answer $D$ Total number of parallel lines $= 4$ Total number of intersecting lines$ = 3$ $\therefore$ Total number of parallelograms possible $$=\binom{4}{2} \times \binom{3}{2} = 6 \times 3 = 18$$ $\therefore D$ is the correct answer. 1 votes 1 votes Please log in or register to add a comment.
2 votes 2 votes Answer $D$ Total number of parallel lines $= 4$ Total number of intersecting lines$ = 3$ $\therefore$ Total number of parallelograms possible $$=\binom{4}{2} \times \binom{3}{2} = 6 \times 3 = 18$$ $\therefore D$ is the correct option. `JEET answered Oct 1, 2019 `JEET comment Share Follow See all 0 reply Please log in or register to add a comment.