The value of   $${sin23^0cos67^0+sec52^0sin38^0+cos23^0sin67^0+cosec52^0cos38^0}\over cosec^220^0-tan^270^0$$ is

The product of the zeroes of the quadratic polynomial x²+7x+ 10 is

The sides of a triangle are in the ratio 3 : 4 : 5. The measure of the largest angle of the triangle is

The volume of a right rectangular pyramid is 220 m³. What is the height of the pyramid, if the area of its base is 55 m²? 

Given that ΔDEF ~ ΔABC. If the area of ΔABC is 9 cm² and area of ΔDEF is 12cm2 , BC = 2.1 cm, then the length of EF is:

$${\sqrt{4×?}}={160\over 10}$$

Find the average of 1.11, 0.01, 0.101, 0.001, 0.11

The cube of 997 is