List of top Quantitative Aptitude Questions

The most widely used therapy for a certain type of ulcer completely heals such
ulcers in 44 percent of patients within six months. In a six-month trial of a new
therapy for this type of ulcer, 80 percent of ulcers treated achieved significant
healing and 61 percent were completely healed. Since the trial treated only ulcers
of this type that were worse than average, the new therapy clearly promotes
healing more effectively than the most widely used therapy. The answer to which of the following would be most useful in evaluating the
argument given?

A society can achieve a fair distribution of resources only under conditions of
economic growth. There can be no economic growth unless the society guarantees
equality of economic opportunity to all of its citizens. Equality of economic
opportunity cannot be guaranteed unless a society's government actively works to
bring it about.
If the statements given are true, it can be properly concluded from them that

High Towers, a company that occupies several office buildings, is considering
installing new energy-efficient lightbulbs in its buildings. The new bulbs require
less than half the electricity consumed by the conventional bulbs currently used
to produce the same amount of light. The new bulbs also last considerably longer.
It follows that by replacing old bulbs as they burn out with the new kind of bulb,
High Towers would significantly reduce its overall lighting costs. Which of the following, if true, most strengthens the argument given?

If S is to be done at some time after T, then T can be done in

If M is done first, which of the following true?

If as many of the experiments as possible must be performed between R and S,
which of the following must be true?

Which of the following color sequences could one of the lights go through as its
color changes?

If X is red and Z is purple, the next color change to occur can be a change from

If X and Z each change color exactly once during a certain period and if, as a
result of these changes X is green and Z is orange, which of the following must
be true about that period?

If X is orange and Z is purple, an interchange of these colors between X and Z
requires a total of at least how many color changes?

Which of the following is an acceptable sequence of experiments, from first to
last?

Which of the following experiments can be done fourth and fifth, respectively, in
the sequence of experiments?

If P is done first and S is done second, then T can be done in

Authorities in California required drivers to use their headlights on a certain
road during the daytime as well as at night and found that annual accident rates
on the road fell 15 percent from the previous level. They concluded that applying
the daytime rule statewide would lead to a similar reduction in accidents. Which of the following, if true, most strengthens the authorities' argument?

Which of the following, if true, most logically completes the passage? Every fusion reaction releases neutrinos. To test a hypothesis about the frequency
of fusion reactions in the Sun, physicists calculated the number of neutrinos the
Sun would produce annually if the hypothesis were correct. From this they
estimated how many neutrinos should pass through a particular location on Earth.
The fact that far fewer neutrinos were counted than were predicted to pass
through the location would seem to prove that the hypothesis is wrong, except
that------.

An economist concluded that Kregg Company deliberately discriminated against
people with a history of union affiliation in hiring workers for its new plant. The
economist's evidence is that, of the 1,500 people hired to work at the new plant,
only 100 had ever belonged to a labor union, whereas in Kregg Company's older
plants, a much higher proportion of workers have a history of union affiliation. Which of the following is an assumption on which the economist's argument
depends?

Hastings’ contracture is a disorder of the connective tissue in one or both hands,
most commonly causing loss of mobility. A survey of thousands of medical-insurance
claims found that over 30 percent of people who had one hand operated on for
Hastings' contracture underwent surgery a second time for this disorder within
three years. Clearly, therefore, a single surgical treatment of Hastings' contracture
is often ineffective at providing long-term correction of the disorder. Which of the following, if true, most seriously weakens the argument?

If O is the third painting auctioned and J is the fourth painting auctioned, which
of the following can be auctioned later in the order than G is auctioned?

If G is the second painting auctioned and if J is auctioned as late in the order as
possible, then O must be the painting auctioned

Excavations at a Mayan site have uncovered jewelry workshops located some distance from the center of the site on roads radiating outward from the center. Since the nobility lived only in the area of the center, archaeologists conclude that these workshops made jewelry, not for the nobility, but for a middle class that must have been prosperous enough to afford it. The archaeologists' argument assumes which of the following about the artisans who worked in the workshops?

Over the last 40 years there has been a great increase not only in the number of
agricultural pesticides in use but also in the care and sophistication with which
they are used by farmers. Nevertheless, the proportion of agricultural crops lost
to certain pests worldwide has increased over the same period, even when the
pests concerned have not developed resistance to existing pesticides. Which of the following, if true, best explains how improvements in pesticide use
have been accompanied by greater losses to certain pests?

If K is the seventh painting auctioned, the latest in the order that J can be
auctioned is

If the fourth, fifth, and sixth paintings auctioned are O, M, and H, respectively,
which of the following must be true?

If O is the first painting auctioned and G is the fifth painting auctioned, then J
must be either the

If M is auctioned as early in the order as possible, which of the following must
be true?