OG10 DS Quiz 12 2x
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———————————————————————————-REVIEW INSTRUCTIONS——————————————————————————————
Thorough review is critical to the learning process and for most people should take a significant amount of time (and effort!) potentially equally or surpassing the amount of time taken to do the question set.
- Redo questions that you got wrong or struggled on without looking at the answers or explanations. Think. Rethink. Push yourself. Put pen to paper. Don’t review with only your eyes!
- Once you’ve solved or if you aren’t able to solve in about 10 minutes carefully review the explanation (if provided). Again, put pen to paper and redo the question along with the explanation.
- If we haven’t provided an explanation or if our explanation didn’t clear up your doubts google the first few words of the question and confirm the solution on the GMAT forums.
- Except for CR and RC, take a screenshot and add it to your dropbox review folder so you can easily revisit the question when assigned review in your HW schedule.
- Bring questions that you still find difficult to QA or to our sessions. For sessions add the screenshots to the “review in session” folder in your dropbox.
Here’s a video outlining the review process: https://www.youtube.com/edit?o=U&video_id=X6k3niNoGuA
This is a crucial part of the preparation so let’s make sure we get it right. If you have any questions contact andrew@atlanticgmat.com or luciano@atlanticgmat.com.
Answer key:
1.A
2.B
3.B
4.A
5.B
6.C
7.E
8.D
9.D
10.B
11.A
12.D
13.D
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- Incorrect
- Question 1 of 13
1. Question
CorrectIncorrect - Question 2 of 13
2. Question
lf x and y are positive integers such that x = 8y + 12, what is the greatest common divisor of x and y?
(1) x = 12u, where u is an integer.
(2) y = 12z, where z is an integer.
CorrectIncorrect - Question 3 of 13
3. Question
lf the integer n is greater than1, is n equal to 2?
(1) n has exactly two positive factors.
(2) The difference of any two distinct positive factors of n is odd.
CorrectIncorrect - Question 4 of 13
4. Question
Is x > y?
(1) x = y + 2
(2) x/2 = y -1
CorrectIncorrect - Question 5 of 13
5. Question
CorrectIncorrect - Question 6 of 13
6. Question
What is the average (arithmetic mean) of a, b, and c ?
(1) a + 2b + 3c = 10
(2) 3a + 2b + c = 14
CorrectIncorrect - Question 7 of 13
7. Question
If x is to be selected at random from set T, what is the probability that 1/4x – 5 ≤ 0?
(1) T is a set of 8 integers.
(2) T is contained in the set of integers from 1 to 25, inclusive.
CorrectIncorrect - Question 8 of 13
8. Question
CorrectIncorrect - Question 9 of 13
9. Question
ls m ≠ n?
(1) m + n < 0
(2) mn < 0
CorrectIncorrect - Question 10 of 13
10. Question
Marta bought several pencils. If each pencil was either a 23-cent pencil or a 21-cent pencil, how many 23-cent pencils did Marta buy?
(1) Marta bought a total of 6 pencils.
(2) The total value of the pencils Marta bought was 130 cents.
CorrectIncorrect - Question 11 of 13
11. Question
lf r and s are nonzero integers, is r/s an integer?
(1) r – 1 = (s + 1)(s – 1)
(2) r – s = 20
CorrectIncorrect - Question 12 of 13
12. Question
lf n is an integer, is n/7 an integer?
(1) 3n/7 is an integer.
(2) 5n/7 is an integer.
CorrectIncorrect - Question 13 of 13
13. Question
A certain 4-liter solution of vinegar and water consists of x liters of vinegar and y liters of water. How many liters of vinegar does the solution contain?
(1) x/4 = 3/8
(2) y/4 = 5/8
CorrectIncorrect