Find the number of parallelograms that can be formed from a set of 6 p – InterviewSolution

1.	Find the number of parallelograms that can be formed from a set of 6 parallel lines intersecting another set of 4 parallel lines.
Answer» This can be selected in ⁶C₂ × ⁴C₂ = 15 × 6 ways = 90 ways.

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