Elitmus Exam Verbal Ability Miscellaneous

Hello guys,
plz tell me how or which book should i prefer for the preparation of the verbal section of Elitmus.

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Elitmus Other Question
A wire is looped in the form of a circle of radius 28 cm.It is bent again into a square form .What will be the length of the diagonal of the largest square possible thus? Four mirrors are erected perpendicular to the ground to form a rectangle ABCD.The longer mirror are facing inwards & negligible gap between the corners.A laser beam is shot at mirror BC through the gap of point A,in a plane parallel to the ground.
i)How many lines will the laser beam bounce of a mirror surface before exiting the rectangle from point C.If the beam travels a total distance of 25cm inside the rectangle?
options:5,4,3,none

ii)How many times will the laser beam bounce mirror surface before exiting the rectangle from point A.if the beam travels shortest possible distance inside the rectangle?
options:22,15,4,none.