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a polynomial ax3+bx2+cx+d intersects x axis at 1,-1 and y axis at 2 then value of b is??

A 280metre long train moving with an avg speed of 108 km/hr crosses a platform in 12 sec. A man crosses the same platform in 10sec.what is the speed of the man in metre/sec?

I have been regularly scoring 150-160 in NMAT please suggest some things at least clear the cut off..

A cuboidal fish tank having l,b,h as 60 cm, 40 cm & 80 cm respectively is filled with water. The base of the tank is tilted by 45 degrees along the breadth & water coming out from the tank is collected in an empty vessel. Volume of the water collected in the vessel is 32 litres. Determine the height of water that was initially there in the tank. (Assume thickness of tank to be negligible) A) 80 cm B) 60 cm C) 63.33 cm D) 76.66 cm

how to solved in % and ratio?

How to solve profit loss sums quickly?

Please provide guidance to increase speed in calculations,especially in DI problems.

Q. Ram purchased a car worth Rs 1000 and Shyam purchased a bike worth Rs 800. The annual % depreciation in their values was 10% & 5% respectively.If they exchanged their vehicles after three years and one paid the other the difference in value, then

how to solve reasoning circular tables problem