The midpoints of AB and AC of a triangle ABC are X and Y respectively. If BC+XY=12 units, then BCXY is
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In a cyclic quadrilateral ABCD ∠BCD=120° and passes through the centre of the circle. Then ∠ABD = ?
Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. The ratio between the capacity of a man and a woman is
The area of the largest triangle that can be inscribed in a semicircle of radius 6m is
If a2+b2c2 = b2+c2a2 = c2+a2b2 = 1k k≠0 then k =
If a+1a2 = 3, then the value of a3+1a3 is
A sum of Rs. 3000 yields an interest of Rs. 1080 at 12% per annum simple interest in how many years ?
A gun is fired at a distance of 1.7 km from Ram and he hears the sound after 25 seconds. The speed of sound in meter per second is