Study the following graph and answer the question that follow.
Number of candidates passed form institutes C and E together is approximately what percentage of the total number of candidates appeared from institutes A and G together?

The number of integers in between 100 and 600, which are divisible by 4 and 6 both, is: 

$$ sin^2 5° + sin^2 10°+sin^2 15°+.....sin^2 85°+sin^2 90°$$ is equal to

A sum of money placed at compound interest triples itself in 9 year. In how many years will if amount to 243 times itself?

Lala has lent some money to Arun at 5% p.a. and Bhatia at 8 % p.a. At the end of the year, he has gained an overall interest at the rate 6%. In what ratio has he lent the money to Arun and Bhatia? 

How may digit are required to write numbers from 1 to 50?

The average of 8 numbers is 38.4. Out of these numbers, the average of 7 number is 39.2. The 8th numbers