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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

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Application +4 | -1

In a plane, there are two sets of parallel lines, one of

m

lines and the other of

n

lines. If the lines of one set cut those of the other, then the number of different parallelograms that can be formed is

View answer and explanation

Correct option: C

\frac{n m(m-1)(n-1)}{4}

Option C (

\frac{n m(m-1)(n-1)}{4}

) is correct because it represents the number of ways to choose two lines from each set of parallel lines to form a parallelogram.

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