JEE Main & Advanced
Mathematics
Permutations and Combinations
Question Bank
Geometrical Problems
question_answer
The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is [WB JEE 1993; RPET 2001]
A)6
B)18
C)12
D)9
Correct Answer:
B
Solution :
Required number of ways\[{{=}^{4}}{{C}_{2}}{{\times }^{3}}{{C}_{2}}=18\].