In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² + 19x + 90 = 0

II. y²+ 13y + 36 = 0

If $$x+{16\over x}=8$$, then the value of $$x^2+{32\over x^2}$$ is:

Direction: Each of the questions consists of a question and two statements numbered I and II given below it. You have to decide whether the data provide in the statements are sufficient to answer the question. Read both the statements and Give answer.
(A) If the data in statement I alone are sufficient to answer the question, while the data in statement II alone not sufficient to answer the question;
(B) If the data in statement II alone are sufficient to answer the question, while the data in statement I all are not sufficient to answer the question;
(C) If the data either in statement I alone or in statement II alone are sufficient to answer the question;
(D) If the data even in both statements I and II together are not sufficient to answer the question;
(E) If the data in both statements I and II together are necessary to answer the question.

What is the ratio between number of black and white balls in a box?
I. Number of black ball is 5 more than the number of white ball.
II. Number of white ball is 80% of the number of black balls.

On dividing 256a²b²c² by 64a², we get

If x = 222, y = 223 and z = 224, then find the value of x³+y³+z³-3xyz

The slant height and the radius of a right circular cone are 11 cm and 6 cm, respectively. What is the curved surface area of the cone?

A certain sum, invested at 4% per annum compound interest, compounded half yearly, amounts to Rs. 7,803 at the end of one year. The sum is: 

Directions: Study the following table carefully to answer the questions that follow Number of Gold coins (in hundred) produced in Five Different companies during Six Different month.

Number of Gold coins produced from company R in the month May was approximately what percentage of the number of Gold coins produced in the company T in the month March?