Search found 17 matches
DS Line
Can someone please provide a good explanation to this? I cant get my head around the OG explanation.
In the XY plane, region R consists of all points (x,y) such that 2x + 3y <= 6.Is the point (r,s) in the region R?
(1) 3r + 2s = 6
(2) r<= 3 and s <=2
- by dunnec3
Sat Mar 26, 2016 10:54 am- Forum: Data Sufficiency
- Topic: DS Line
- Replies: 2
- Views: 1534
PS Algrebra
Can anyone help solving this please?
[2^(x+y)^2 ]/ [2^(x-y)^2], xy=1
Ans: 2, 4, 8, 16, 32
- by dunnec3
Tue Mar 22, 2016 10:37 pm- Forum: Problem Solving
- Topic: PS Algrebra
- Replies: 3
- Views: 1804
PS Workrate
Cant get my head around this.
Six machined work at a constant rate and do a job in 12 days. If I want to do the job in 8 days, how many extra workers do I need?
2, 3, 4, 6, or 8
- by dunnec3
Mon Mar 21, 2016 11:08 pm- Forum: Problem Solving
- Topic: PS Workrate
- Replies: 1
- Views: 1122
DS Positives/Negatives
Are both X and Y positive?
(1) 2x - 2y = 1
(2) x/y > 1
This is from the GMAT prep test. Says the answer is C but I'm not understanding the reasoning. Can anyone help please?
- by dunnec3
Sun Mar 20, 2016 10:06 pm- Forum: Data Sufficiency
- Topic: DS Positives/Negatives
- Replies: 2
- Views: 1171
- by dunnec3
Sat Mar 19, 2016 12:11 pm- Forum: Data Sufficiency
- Topic: DS Median Question
- Replies: 3
- Views: 1275
DS Median Question
What is the median number of employees assigned per project at a company? (1) 25% of the projects have 4 or more employees per project (2) 35% of the projects have 3 or more employees per project I came across this question on the OG but I'm not happy with the explanation. Anyone care to give it a go?
- by dunnec3
Sat Mar 19, 2016 12:09 pm- Forum: Data Sufficiency
- Topic: DS Median Question
- Replies: 3
- Views: 1275
Apologies, here are the answer choices. It was on a London Business School sample test.
20×(2^2/3^6)
10×(2^3/3^6)
20×(2^3/3^5)
20×(2^3/3^6)
20×(2^2/3^5)
- by dunnec3
Tue Mar 15, 2016 2:33 am- Forum: Data Sufficiency
- Topic: PS Dice Roll
- Replies: 2
- Views: 1170
PS Dice Roll
Johnny the gambler tosses 6 plain dice. In order to win the jackpot he has to receive exactly 3 times a result of 5 or 6. What are Johnny's chances to win?
I'm not sure what exactly this question is asking. To win does he have to roll either 3 x 5s or 3 x 6s, or roll 3 x 5's or 6's?
Confused!
- by dunnec3
Mon Mar 14, 2016 8:19 am- Forum: Data Sufficiency
- Topic: PS Dice Roll
- Replies: 2
- Views: 1170
- by dunnec3
Mon Mar 14, 2016 8:07 am- Forum: Data Sufficiency
- Topic: DS Absolute Value
- Replies: 2
- Views: 1137
DS Absolute Value
Pretty sure I've this one but would like to confirm I have it right. Anyone want to give it a go?
What is the value of m?
(1) |m| = −36/m
(2) 2m+2|m| = 0
- by dunnec3
Mon Mar 14, 2016 7:08 am- Forum: Data Sufficiency
- Topic: DS Absolute Value
- Replies: 2
- Views: 1137
- by dunnec3
Mon Mar 14, 2016 6:29 am- Forum: Data Sufficiency
- Topic: DS Algebra Q
- Replies: 1
- Views: 1060
ST Query
Despite recent increases in sales and cash flow that have propelled automobile companies' common stocks to new highs, several industry analysts expect automakers, in order to conserve cash, to set dividends more conservatively than they were. I went with this: to set dividends more conservatively th...
- by dunnec3
Fri Dec 04, 2015 6:05 am- Forum: Sentence Correction
- Topic: ST Query
- Replies: 1
- Views: 1151
Indices PS Question
Help! Is there a quick way to solve (10^8 - 10^2)/(10^7 - 10^3) that I'm missing?
- by dunnec3
Fri Dec 04, 2015 5:58 am- Forum: Problem Solving
- Topic: Indices PS Question
- Replies: 3
- Views: 1370
Standard Deviation PS Question
In and exam a score of 58 was 2 standard deviations below mean and score of 98 was 3 standard deviations above mean. What was the mean?
- by dunnec3
Fri Dec 04, 2015 4:05 am- Forum: Problem Solving
- Topic: Standard Deviation PS Question
- Replies: 2
- Views: 1417
Arithmetic Series PS Question
In the arithmetic sequence t1, t2, t3,......tn = 23 and tn = t(n-1) - 3 [(n-1) is supposed to be subscript as in term t(n-1)] for each n>1. What is the value of n for tn = -4
Colin
- by dunnec3
Fri Dec 04, 2015 3:48 am- Forum: Problem Solving
- Topic: Arithmetic Series PS Question
- Replies: 1
- Views: 976