Pre Mock Scholarship Test

The pie chart given below shows the number of boys in 8 schools. The total number of boys in all these 8 schools is 6000. Number of boys in a particular school is shown as a percent of total number of boys in all these 8 schools.

Which of the following statement is correct?

I. The difference between number of boys in school M and Q are 1660

II. The sum of number of boys in school J, K and L are 2400

A solid metallic sphere of radius 12 cm is melted and recast into a cone having diameter of the base as 12 cm. What is the height of the cone?

A sum of money invested at simple interest becomes 13/10 of itself in 2 years and 6 months. What is the rate of interest per annum?

In each of the following number series a wrong number is given. Find out that number

12, 237, 406, 527, 604, 657

In the Taylor series expansion of  about the point x = 0, the coefficient of (x – 0)² is

If x (x⁴ + 1) f(x) = 1 then find the value of

Find the value of this

If  and  then find the value of A³?

A die is rolled ‘n’ times until 4 appears then the probability that die must rolled more than 5 times before getting a “4”,