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If P1(1/5,alpha) and P2(beta,18/5) be th...

If `P_1(1/5,alpha) and P_2(beta,18/5)` be the images of the point `P(1,gamma)` about lines `L_1:2x-y=lambda and L_2:2y+x=4` respectively, then the value of `alpha` is a).`-3/5` (b). `2/5` (c). `7/5` (d). `-8/5`

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