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The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is 

A. 6  B. 18 C. 12 D. 9

1 Answer

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Best answer

B. 18

Formula:-

The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines

4C2.3C2

= 6 x 3 

= 18

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