The diameter of two cones is the same. If the ratio of their slant height is 5 : 4, then find the ratio of their areas. 

If $$ {\sqrt{2x+9}+x=13}$$ then find the value of x?

If 20% of (A + B) = 30% of (A − B), then what percentage of B is equal to A?

The least multiple of 7, which leaves the remainder 4, when divided by any of 6, 9, 15 and 18, is 

The LCM of three different numbers is 120. Which of the following cannot be their HCF? 

Direction: Study the line graph carefully to answer the following questions.
Line graph shows the production (in thousand units) and percentage of exported mobiles, computers and laptops.

In which of the following years was the production of Laptops exactly 40% of the total production of Mobiles, Computers and Laptops in that year?

If x + y + z=1, xy+yz+zx=-26 and x³ + y³+z³=151, then what will be the value of xyz?

The value of $$ {\sqrt{0.6912}+{\sqrt{0.5292}}\over {\sqrt{0.6912}-{\sqrt{0.5292}}}}$$ is: