In the given filed the area under triangular shape is

Directions : What should come in place of the question mark (?) in the following number series? 

474 459 429 369 249 ?

α and β  is two root of a equations $$2x^2-7x+ 12=0 $$ then the value of $$ {α \over β }  + {β \over α }=? $$

The distance between the coordinates ( x,y)  from the original point will be

Geeta weighs 11.235 kg . Her sister weighs 1.4 times her weight . Find their combined weight ? 

A basket consists of five blue balls, four green balls, two red balls and three yellow balls. Three balls are drawn at random. What is the probability that at least one blue ball is drawn?

Rajan purchased two ceiling fans at the rate Rs. 2,500 each. Out of which one fan was sold at 15% profit and other was sold at 8% loss. How much profit or loss percentage is obtained in the whole transaction? 

A tank of 30 meter long, 20metre wide and 12 meter deep is dug in a rectangular field of length 588 meter and breadth 50 meter. The earth sand so dug out is spread evenly on the remaining part of the field. The height of the field raised by it is