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Three ums A,B and C contain + red, 6 bla...

Three ums `A,B` and `C` contain `+` red, `6` black. `5` black and `lambda` red, `4` black balls respectively. One of the turns is selected at random and a ball is drawn.If the ball drawn is red and the probability that it is drawn from `m` on `C` is `0.4` then the square of the length of the side of the largest equilteral triangle,inscribed in the parabola `y^(2)=lambda x` with one vertex at the vertex of the parabola, is

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JEE MAINS PREVIOUS YEAR-JEE MAINS 2023 JAN ACTUAL PAPER-Question
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