A, B and C can finish a job working alone in 72, 24 and 36 days respectively. In how many days they can finish the job if they worked together?
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Which of the following quadratic equations has equal roots?
A tap can fill a tank in 50 minutes. If the tank has a leakage which alone is capable of emptying the tank in 2.5 hours, the tank will now be filled in
The sum of radii of the two circles is 91 cm and the difference between their area is 2002 cm2 . What is the radius (in cm) of the larger circle?
If the volume of a cylinder is 385 cubic cm and height is 10 cm, find its radius?
The radius of a hemisphere is 7 cm, find its volume?
A boy crosses a 300 metres wide road in 30 seconds. What is his speed (in km/hr)?
What is the value of sin 330°?
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