In a plane these are two families of lines y = x + r , y = − x + r , where r ∈ { 0 , 1 , 2 , 3 , 4 } . The number of squares of diagonals of the length 2 units formed by the lines is

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MathematicsPermutation & CombinationFundamental PrincipleEasy2 minQB

MathematicsEasysingle choice

In a plane these are two families of lines $y = x + r, y = - x + r$ , where $r \in {0, 1, 2, 3, 4}$ .

The number of squares of diagonals of the length 2 units formed by the lines is

Answer:

Solution:

Required ways $= 3 \times 3 = 9$ .

Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:Fundamental Principle

⏱ 2mℹ️ Source: QB

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