A sum of money amounted to Rs.720 in 2 years and Rs.792 in 3 years when interest is compounded annually. The annual rate of interest , (in%) is:

Directions: Study the following information carefully and answer the questions that follow:

Six persons P, Q, R, S, T and U were born in three different months May, September and November, on two different dates- 9 and 16 not necessarily in the same order. P was born after R but not on the same date as that of R. Number of persons born before S is equal to the number of persons born after T. Q and U were born in the same month. T was born in a month having even number of days. Two persons were born between R and T.

What is the square root of sum of the dates on which R and P were born?

The median of the following data will be _________. 

32, 25,33,27, 35, 29 and 30 

Each question below is followed by two statements A and B. You have to determine whether the data given in the statement is sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answer.
Give answer (A) if the statement A alone is sufficient to answer the question, but statement B alone is not sufficient.
Give answer (B) if the statement B alone is sufficient to answer the question, but statement A alone is not sufficient.
Give answer (C) if both statements A and B together are needed to answer the question.
Give answer (D) if either the statements A alone or statement B alone is sufficient to answer the question
Give answer (E) if you cannot get the answer from the statements A and B together, but need even more data.

Triangle ABC has angle BAC equal to 90°. What is the measure of the angle ABC?
A. The angle ACB is 35°
B. The angle CBA is 55°

If a shopkeeper bought 70 kg of potatoes for Rs 420 and sold the entire purchase at the rate of 6.50 per kg, what was his profit percentage?

If x⁴+2x³+ax²+bx+9 is a perfect square where a and b are positive real numbers, then the value of a and b