$$ ({2+\sqrt{5}})$$ and $$ ({2-\sqrt{5}})$$ is a quadratic equation with roots.

S is 20% more than T. T is 10% less than U. What is the ratio of S to ?

A triangle and a parallelogram are on the same base and between the same parallels. The ratio of the area of triangle and parallelogram is______. 

Find value of $$ {^3\sqrt{\sqrt{0.000729}}}+^3{\sqrt{0.008}}$$

The value of $$ cos {20^o} cos {40^o}cos {60^o}cos {80^o}$$ is:

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

1.7 5.4 19.2 80.8 409 ?

The given pie chart shows the percentage of students enrolled for the courses A, B, C, D and E in a university and the table shows the percentage of students that passed, out of the enrolled students.
Total Students=60,000

If the total number of students is 60,000, then the total number of students who did not pass in the course A, C is:

Mahadev covered some distance at some speed. If he traveled a distance of 3 km / h more, it took him 40 minutes less time. If he had covered the distance at a speed of 2 km / h less, he would have taken 40 minutes more. The distance (in km) is