The maximum value of 5+20x-4x2, when X is real number
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A, B and C can do a job working alone in 50, 75 and 20 days respectively. They all work together for 4 days, then C quits. How many days will A and B take to finish the rest of the job?
A carpenter can build a cupboard in 48 hours. After 12 hours he takes a break. What fraction of the cupboard is yet to be built?
A rice trader buys 8 quintals of rice for Rs 3,600. 10% rice is lost in transportation. At what rate should he sell to earn 15% profit?
What is the LCM (least common multiple) of 57 and 93?
The zeros of the cubic polynomial 2x3-x2-2x+1 are a, b and c respectively. Find a+b+c :
If the radius of a circle is decreased to 25% of its original value, calculate the percentage decrease in the area of the circle
The area of the largest sphere ( in cm2) that can be drawn inside a square of side 18 cm is
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