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.

What is the number?
A. 20% of that number is one fifth of that number.
B. 5/6th of that number is less than that number by 15.

What is the sum of two consecutive even numbers, the difference of whose square is 84? 

The product of two numbers is 2028 and their HCF is 13. The number of such pair is-

If two complimentary angles are in the ratio of 4:5, find the greater angle.

The simple interest on a sum of money for 3 years is ₹240 and the compound interest on the same sum, at the same rate  for 2 years is ₹170. The rate of interest is 

When a positive integer n is divided by 5 the remainder is 2. What is the remainder when the number 3n is is divided by 5 ?

What is the total CSA of cone whose radius is 3 cm and height is 4 cm? 

ΔPQR is right angled at Q. If cos P = 3/5, then what is the value of cos R?