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JEE MATHEMATICS MCQ: PERMUTATIONS

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Application +4 | -1

There are 3 set of parallel lines containing respectively

p

lines,

q

lines and

r

lines respectively. The greatest number of parallelograms that can be formed by the system

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Correct option: D

None of these

Option D (None of these) is correct because the formula provided does not correctly calculate the number of parallelograms.

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