Search found 73 matches
GMAT PREP (SETS)
Of the studnets who eat in a cafteria, each student either likes or dislikes lima beans and each student either likes or dislikes brussel sprouts. of the students, 2/3 dislike lima beans; and of those who dislikes lima beans; 3/5 also dislike brussels sprouts. How many of the students like brussel s...
- by relaxin99
Mon Feb 16, 2009 4:33 pm- Forum: Data Sufficiency
- Topic: GMAT PREP (SETS)
- Replies: 1
- Views: 1213
GMAT PREP (XY PLANE)
In the xy-plane, at what points does the graph of y = (x + a)(x + b) intersect the x-axis?
(1) a + b = 1
(2) The graph intersects the y-axis at (0, -6)
Can someone please explain their answer as well, the correct answer is down below
The answer is C
- by relaxin99
Mon Feb 16, 2009 4:29 pm- Forum: Data Sufficiency
- Topic: GMAT PREP (XY PLANE)
- Replies: 2
- Views: 1559
GMAT PREP (Distance & Rate)
Did it take Pei more than 2 hours to walk a distance of 10 miles along a certain trail? (1 mile = 1.6 kilometers) (1) Pei walked this distance at an average rate of less than 6.4 kilomters per hour. (2) On average, it took Pei more than 9 minutes per kilometer to walk this distance. Can someone plea...
- by relaxin99
Mon Feb 16, 2009 4:28 pm- Forum: Data Sufficiency
- Topic: GMAT PREP (Distance & Rate)
- Replies: 3
- Views: 2115
GMAT PREP (Range)
For teh students in class A, the range of their heights is r centimeters and the greatest height is g centimeters. For the students in class B, the range of their heights is s centimeters and the greatest height is h centimeters. Is the least height of the students in class A greater than the least ...
- by relaxin99
Mon Feb 16, 2009 4:25 pm- Forum: Data Sufficiency
- Topic: GMAT PREP (Range)
- Replies: 1
- Views: 1691
Probability (GMAT PREP)
For one toss of a certain coin, the probability that the outcome is heads is 0.6. If the coin is tossed 5 times, which of the following is the probability that the outcome will be at least 4 times? A) (0.6)^5 B) 2(0.6)^4 C) 3(0.6)^4(0.4) D) 4(0.6)^4(0.4) * (0.6)^5 E) 5(0.6)^4(0.4) + (0.6)^5 from GMA...
- by relaxin99
Sun Feb 15, 2009 6:16 pm- Forum: Problem Solving
- Topic: Probability (GMAT PREP)
- Replies: 2
- Views: 1099
Sets
Of the 200 memebers of a certain association, each member who speaks German also speaks English and 70 of the members speak only Spanish. If no members speak all three languages, how many of the members speak two of the three languages? (1) 60 of the members speak only English (2) 20 of the members ...
- by relaxin99
Sun Feb 15, 2009 4:13 pm- Forum: Data Sufficiency
- Topic: Sets
- Replies: 2
- Views: 1271
Miles Per Gallon
A certain car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when driven on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car averages when it is driven 10 miles in the city and 50 miles o...
- by relaxin99
Sun Feb 15, 2009 4:09 pm- Forum: Problem Solving
- Topic: Miles Per Gallon
- Replies: 1
- Views: 1594
Positive Integers
A certain list consists of several different integers. Is the product of all the integers in te list postive? (1) The product of the greatest and smallest of the integers in the list is positive (2) There is an even number of integers in the list The answer is C, i chose E...can you someone please e...
- by relaxin99
Sun Feb 15, 2009 2:28 pm- Forum: Data Sufficiency
- Topic: Positive Integers
- Replies: 2
- Views: 1446
- by relaxin99
Sun Feb 15, 2009 1:26 pm- Forum: Problem Solving
- Topic: Greatest Prime Factor
- Replies: 2
- Views: 1110
ax + b = 0
ax + b = 0, is x>0?
(1) a + b > 0
(2) a - b > 0
The anwer is E, i thought it is C. can someone please explain
- by relaxin99
Thu Feb 12, 2009 2:39 pm- Forum: Data Sufficiency
- Topic: ax + b = 0
- Replies: 3
- Views: 5080
X & Y as integers
If x & y are integers, is the value of x(y + 1) even?
(1) x & y are prime numbers
(2) y > 7
The answer is C, can someone please explain why
- by relaxin99
Thu Feb 12, 2009 2:37 pm- Forum: Data Sufficiency
- Topic: X & Y as integers
- Replies: 3
- Views: 1186
XY Coordinate
In the xy coordinate plane, line L and line K intersect at point (4, 3). Is the product of their slops negative?
(1) The product of the x-intercepts of the line L and K is positive
(2) The product of the lines L and K are negative
The answer is C, can someone please explain
- by relaxin99
Thu Feb 12, 2009 2:36 pm- Forum: Data Sufficiency
- Topic: XY Coordinate
- Replies: 10
- Views: 8690
Two Digit variable
For any positive integer n, the length of n is definned as the number of prime factors whose product is n. For example, the length of 75 is 3; since 75 = 3 * 5 * 5. How many two digit positive integers have length 6? A) None B) one C) two D) three E) four the answer is C) two, can someone please exp...
- by relaxin99
Thu Feb 12, 2009 2:27 pm- Forum: Problem Solving
- Topic: Two Digit variable
- Replies: 2
- Views: 1464
Triangle
Which of the following lists the number of points at which a circle can intersect a triangle?
A) 2 and 6 only
B) 2, 4, and 6 only
C) 1,2 ,3 and 6 only
D) 1, 2, 3, 4, and 6 only
E) 1, 2, 3, 4, 5 and 6 only
The answer is E, can someone explain
- by relaxin99
Thu Feb 12, 2009 2:24 pm- Forum: Problem Solving
- Topic: Triangle
- Replies: 5
- Views: 1317
Square Root and Absolute Value
x < 0 ; square root of -x(abs value x)?
A) -X
B) -1
C) 1
D) X
E) square root X
- by relaxin99
Thu Feb 12, 2009 2:19 pm- Forum: Problem Solving
- Topic: Square Root and Absolute Value
- Replies: 1
- Views: 1421