The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is
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18..
The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is 18...
The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is 18...
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(4*3/2)*(3*2/2)
=(12/2)*(6/2)
=6*3
=18
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