Directions-Study the following diagram and answer the four questions.

The percentage of students securing marks less than 50 is

The difference between the simple interest between the simple interest received from two different sources on ₹ 1500 for 3 years is ₹ 13.50. The difference between their rate of interest is - 

The value of $$ \sqrt { 2^4} \ + \ ^{3}\sqrt {64} \  + \ ^4\sqrt { 2^8} \    $$ is :

A discount of   $$ 2{1\over 2}\% $$ is given to the customer on the marked price of an article. A man bought the article for Rs.39. The marked price of the article is:

What are the roots of the equation log₁₀(x²-6x+45) =2?

Unit digit in (264)¹⁰²+(264)¹⁰³ is:

Directions-Study the following diagram and answer the four questions.

The total no. of students on whom this survey was made is

Directions-Study the following diagram and answer the four questions.

The range of marks obtained by maximum no. of students is