## Data Sufficiency

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OFFICIAL GUIDE QUESTION LIBRARY
by beatthegmat »
Join the discussion as you work through your Official Guide and gain...
1
Last post by Debojiteo
Sat Oct 02, 2021 10:21 pm
Water is pumped into a partially filled tank at a constant rate through an inlet pipe. At the same time, water is pumped
by Vincen »
Water is pumped into a partially filled tank at a constant rate...
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Last post by Vincen
Thu Jan 27, 2022 12:53 pm
In the sequence of positive numbers $$x_1, x_2, x_3, \ldots,$$ what is the value of $$x_1?$$
by Vincen »
In the sequence of positive numbers $$x_1, x_2, x_3, \ldots,$$ what...
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Last post by Vincen
Thu Jan 27, 2022 12:48 pm
If $$CD$$ is the diameter of the circle, does $$x$$ equal $$30?$$
by Vincen »
Triangle.jpg If $$CD$$ is the diameter of the circle, does $$x$$...
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Last post by Vincen
Thu Jan 27, 2022 12:42 pm
If $$c$$ is an integer and $$c > 0,$$ is $$c$$ a root of the equation $$x^3-14x^2+24x=0 ?$$
by Vincen »
If $$c$$ is an integer and $$c > 0,$$ is $$c$$ a root of the...
0
Last post by Vincen
Thu Jan 27, 2022 12:40 pm
Is $$4^{x+y}=8^{10}?$$
by Vincen »
Is $$4^{x+y}=8^{10}?$$ (1) $$x - y = 9$$ (2) $$\dfrac{y}{x} =... 0 Last post by Vincen Thu Jan 27, 2022 12:36 pm Is \(\dfrac{x}{m}\cdot (m^2+n^2+k^2)=xm+yn+zk?$$
by Vincen »
Is $$\dfrac{x}{m}\cdot (m^2+n^2+k^2)=xm+yn+zk?$$ (1)...
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Last post by Vincen
Thu Jan 27, 2022 12:32 pm
If $$n$$ and $$k$$ are positive integers, is $$\sqrt{n+k}>2\sqrt{n}?$$
by Vincen »
If $$n$$ and $$k$$ are positive integers, is...
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Last post by Vincen
Thu Jan 27, 2022 12:26 pm
a, b, c, d, e What is the value of median of the list of integers above if a < b < c < d < e
by BTGmoderatorDC »
a, b, c, d, e What is the value of median of the list of integers...
0
Last post by BTGmoderatorDC
Wed Jan 26, 2022 5:09 pm
50 animals competed for prizes at a ceratin fair. How many of the animals won prizes?
by BTGmoderatorLU »
Source: Manhattan Prep 50 animal competed for prizes at a certain...
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Last post by BTGmoderatorLU
Wed Jan 26, 2022 4:48 pm
If z is an integer, is z even?
by BTGmoderatorDC »
If z is an integer, is z even? (1) z/2 is even. (2) 3z is even. OA D...
1
Last post by [email protected]
Wed Jan 26, 2022 7:33 am
In planning for a trip, Joan estimated both the distance of the trip, in miles, and her average speed, in miles per hour
by BTGmoderatorDC »
In planning for a trip, Joan estimated both the distance of the trip,...
1
Last post by [email protected]
Tue Jan 25, 2022 6:33 am
What is the volume of a certain cube?
by BTGmoderatorDC »
What is the volume of a certain cube? (1) The sum of the lengths of...
0
Last post by BTGmoderatorDC
Sun Jan 23, 2022 4:59 pm
How many men are in a certain company's vanpool program?
by Gmat_mission »
How many men are in a certain company's vanpool program? (1) The...
1
Last post by [email protected]
Sun Jan 23, 2022 7:38 am
What is the value of the positive integer $$m?$$
by Gmat_mission »
What is the value of the positive integer $$m?$$ (1) When $$m$$ is...
1
Last post by [email protected]
Sun Jan 23, 2022 7:37 am
If $$x$$ is an integer, is $$(x^2 + 1)(x + 5)$$ an even number?
by Gmat_mission »
If $$x$$ is an integer, is $$(x^2 + 1)(x + 5)$$ an even number? (1)...
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Last post by Gmat_mission
Sun Jan 23, 2022 1:52 am
If $$x$$ and $$y$$ are positive integers, is $$x^{16} - y^8 + 345y^2$$ divisible by $$15?$$
by Gmat_mission »
If $$x$$ and $$y$$ are positive integers, is $$x^{16} - y^8 +... 0 Last post by Gmat_mission Sun Jan 23, 2022 1:46 am A music festival took place over two days, Saturday and Sunday. What percent of attendees only attended on Saturday? by Gmat_mission » A music festival took place over two days, Saturday and Sunday. What... 0 Last post by Gmat_mission Sun Jan 23, 2022 1:36 am Events \(A$$ and $$B$$ are independent and have equal probabilities of occurring. What is the probability that event
by Gmat_mission »
Events $$A$$ and $$B$$ are independent and have equal probabilities...
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Last post by Gmat_mission
Sun Jan 23, 2022 1:33 am
If each term in an infinite sequence is found by the equation $$S_x=8^x-6,$$ and $$S_1=2,$$ is every term in the sequenc
by Gmat_mission »
If each term in an infinite sequence is found by the equation...
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Last post by Gmat_mission
Sun Jan 23, 2022 1:29 am
A certain company currently has how many employees?
by Gmat_mission »
A certain company currently has how many employees? (1) If 3...
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Last post by Gmat_mission
Sun Jan 23, 2022 1:12 am
When opened and lying flat, a birthday card is in the shape of a regular hexagon. The card must be folded in half along
by Gmat_mission »
When opened and lying flat, a birthday card is in the shape of a...
0
Last post by Gmat_mission
Sun Jan 23, 2022 1:06 am
If Machine B and Machine C work together at their constant individual rates to produce x widgets, what percent of the
by BTGmoderatorDC »
If Machine B and Machine C work together at their constant individual...
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Last post by BTGmoderatorDC
Fri Jan 21, 2022 9:19 pm
At a certain coffee shop, all the customers drink either coffee or tea, but not both. If 1/2 of the male customers and
by BTGmoderatorLU »
Source: Princeton Review At a certain coffee shop, all the customers...
0
Last post by BTGmoderatorLU
Fri Jan 21, 2022 6:07 pm
If x is a positive integer less than 10, is 14,743 + x prime?
by BTGmoderatorDC »
If x is a positive integer less than 10, is 14,743 + x prime? (1) x/2...
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Last post by BTGmoderatorDC
Thu Jan 20, 2022 5:42 pm
For what percent of those tested for a certain infection was the test accurate; that is, positive for those who had the
by AAPL »
GMAT Prep For what percent of those tested for a certain infection...
0
Last post by AAPL
Wed Jan 19, 2022 6:56 pm
What was the percentage change in the simple average profit per car sold by dealer X from 2000 to 2009?
by BTGmoderatorDC »
What was the percentage change in the simple average profit per car...
0
Last post by BTGmoderatorDC
Wed Jan 19, 2022 4:45 pm
The average of 6 numbers is 8. One new number is now added to the set of 6 numbers and the arithmetic mean of the 7
by BTGmoderatorDC »
The average of 6 numbers is 8. One new number is now added to the set...
0
Last post by BTGmoderatorDC
Tue Jan 18, 2022 5:25 pm
If N is a positive Integer, is the units digit of N equal to zero?
by BTGmoderatorDC »
If N is a positive Integer, is the units digit of N equal to zero?...
0
Last post by BTGmoderatorDC
Mon Jan 17, 2022 5:58 pm
Coordinate Geometry
by swerve »
Every point in the $$xy$$-plane satisfying the condition $$ax + by... 0 Last post by swerve Mon Jan 17, 2022 4:31 pm What distance did Jane travel? by M7MBA » What distance did Jane travel? (1) Bill traveled 40 miles in 40... 1 Last post by [email protected] Mon Jan 17, 2022 8:07 am If \(x$$ and $$y$$ are integers and $$2 < x < y,$$ does $$y = 16?$$
by Gmat_mission »
If $$x$$ and $$y$$ are integers and $$2 < x < y,$$ does $$y =... 0 Last post by Gmat_mission Sun Jan 16, 2022 3:46 pm Is \(x^2 + y^2 > 100?$$
by M7MBA »
Is $$x^2 + y^2 > 100?$$ $$(1)\, 2xy < 100$$ $$(2)\, (x + y)^2... 0 Last post by M7MBA Sun Jan 16, 2022 2:03 pm A certain painting job requires a mixture of yellow, green, and white paint. If 12 quarts of paint are needed for the jo by M7MBA » A certain painting job requires a mixture of yellow, green, and white... 0 Last post by M7MBA Sun Jan 16, 2022 2:00 pm Is \(\dfrac{5^{x+2}}{25}<1?$$
by M7MBA »
Is $$\dfrac{5^{x+2}}{25}<1?$$ (1) $$5^x<1$$ (2) $$x<0$$...
0
Last post by M7MBA
Sun Jan 16, 2022 12:14 pm
What is the surface area of rectangular solid $$y?$$
by M7MBA »
What is the surface area of rectangular solid $$y?$$ (1) The...
0
Last post by M7MBA
Sun Jan 16, 2022 12:02 pm
Is $$\dfrac{r}{s^2}$$ a terminating decimal?
by M7MBA »
Is $$\dfrac{r}{s^2}$$ a terminating decimal? (1) $$s=225$$ (2)...
0
Last post by M7MBA
Fri Jan 14, 2022 9:20 am
If $$an \ne 0$$ and $$n$$ is a positive integer, is $$n$$ odd?
by M7MBA »
If $$an \ne 0$$ and $$n$$ is a positive integer, is $$n$$ odd? (1)...
0
Last post by M7MBA
Fri Jan 14, 2022 9:17 am
$$P=a^4\cdot b^7,$$ where $$a^2=1$$ and $$b^2=9.$$ What is the value of $$P?$$
by M7MBA »
$$P=a^4\cdot b^7,$$ where $$a^2=1$$ and $$b^2=9.$$ What is the value...
0
Last post by M7MBA
Fri Jan 14, 2022 9:14 am
In a freshman high school class there are 125 total students. If 75 of the total students are enrolled in Geometry,
by BTGmoderatorDC »
In a freshman high school class there are 125 total students. If 75...
1
Last post by swerve
Fri Jan 14, 2022 6:12 am
Set $$X = \{a, b, c, d, 9\},$$ where $$a, b, c, d$$ and $$9$$ are five distinct positive integers. If $$9$$ is the only
by M7MBA »
Set $$X = \{a, b, c, d, 9\},$$ where $$a, b, c, d$$ and $$9$$ are...
0
Last post by M7MBA
Thu Jan 13, 2022 12:28 pm
If $$r$$ is represented by the decimal $$0.t5,$$ what is the digit $$t?$$
by M7MBA »
If $$r$$ is represented by the decimal $$0.t5,$$ what is the digit...
0
Last post by M7MBA
Thu Jan 13, 2022 12:24 pm
If $$a$$ and $$b$$ are nonzero integers, is $$a^b$$ an integer?
by M7MBA »
If $$a$$ and $$b$$ are nonzero integers, is $$a^b$$ an integer? (1)...
0
Last post by M7MBA
Thu Jan 13, 2022 12:20 pm
A certain computer company produces two different monitors, P and Q. In 2010, what was the net profit from the sale of
by BTGmoderatorLU »
Source: Official Guide A certain computer company produces two...
1
Last post by [email protected]
Thu Jan 13, 2022 9:47 am
If $$|a + 5| = |b + 5|$$ what is the value of $$a + b?$$
by VJesus12 »
If $$|a + 5| = |b + 5|$$ what is the value of $$a + b?$$ (1) $$b >... 0 Last post by VJesus12 Thu Jan 13, 2022 5:10 am If the average (arithmetic mean) of six different numbers is 25, how many of the numbers are greater than 25? by VJesus12 » If the average (arithmetic mean) of six different numbers is 25, how... 0 Last post by VJesus12 Thu Jan 13, 2022 5:06 am All boxes in a certain warehouse were arranged in stacks of 12 boxes each, with no boxes left over. After 60 additional by VJesus12 » All boxes in a certain warehouse were arranged in stacks of 12 boxes... 0 Last post by VJesus12 Thu Jan 13, 2022 5:03 am Both Betty and Wilma earn annual salaries of more than 50000. Is Wilma's annual salary greater than Betty's? by VJesus12 » Both Betty and Wilma earn annual salaries of more than 50000. Is... 0 Last post by VJesus12 Thu Jan 13, 2022 5:00 am What is the greatest common factor of positive integers x and y? by BTGmoderatorDC » What is the greatest common factor of positive integers x and y? (1)... 0 Last post by BTGmoderatorDC Wed Jan 12, 2022 10:14 pm If the quadrilateral \(PQRS$$ can be completely inscribed in a circle $$C$$ with $$PR$$ passing through the center of
by VJesus12 »
If the quadrilateral $$PQRS$$ can be completely inscribed in a circle...
0
Last post by VJesus12
Wed Jan 12, 2022 10:53 am