Chemical Engineering > GATE 2018 > Combinatorics
A set of 4 parallel lines intersect with another set of 5 parallel lines. How many parallelograms are formed?
A
20
B
48
C
60
D
72

Correct : c

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Related Topics

parallelogram formation GATE Chemical Engineering 2018 intersecting parallel lines count parallelograms chemical engineering gate GATE 2018 questions parallelogram geometry parallel lines intersection

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