List of top Quantitative Aptitude Questions on Data Sufficiency asked in CAT

The average of three unequal quotations for a particular share is Rs.110. If all are quoted in integral values of rupee, does the highest quotation exceed Rs.129?
I. The lowest quotation is Rs.100.
II. One of the quotations is Rs.115.

What is the radius of the circle?
I. Ratio of its area to circumference is $> 7$.
II. Diameter of the circle is $\leq 32$.

How many people (from the group surveyed) read both Indian Express and Times of India?
I. Out of total of 200 readers, 100 read Indian Express, 120 read Times of India and 50 read Hindu.
II. Out of a total of 200 readers, 100 read Indian Express, 120 read Times of India and 50 read neither.

What is the value of prime number $x$?
I. $x^2 + x$ is a two-digit number greater than 50.
II. $x^3$ is a three-digit number.