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Hello, Can you please tell me how to solve this: If tuvw = 108, and t, u, v, and w are all positive integers such that t > u > v > w, what is the greatest possible value for t - w? A) 1 B) 16 C) 17 D) 18 E) 19 OA: 17 Thanks a lot, Sri To Maximize the difference, W should be 1. Add 1 to the answer c...

by kvcpk

Mon Jun 23, 2014 8:25 am
Forum: Problem Solving
Topic: If tuvw = 108, and t, u, v, and w are all positive integers
Replies: 3
Views: 3176

thanks for taking time to read and reply to my post. you got a valid point that after all GMAT is a 'Test' and the test makers are trying to trick us in various ways some of which you mentioned. I would be surprised if such convoluted language would be used in the real world of business management ...

by kvcpk

Mon Jun 23, 2014 7:53 am
Forum: Reading Comprehension
Topic: RC OG 13 - Tough one
Replies: 5
Views: 2191

4^-x is always greater than 0 y^4 is always greater than 0. Hence the question always remains true. We dont need to look at the stmts 1 and 2. Am I missing something? Hint: the part in blue is not correct. Cheers, Brent My Bad. I completely lost track. Y can be zero. Ok Now here goes my solution: A...

by kvcpk

Sun Jun 22, 2014 6:39 pm
Forum: Data Sufficiency
Topic: Powers and inequalities
Replies: 8
Views: 4261

Brent@GMATPrepNow wrote:
kvcpk wrote: Am I missing something?
Yes ... :-)
I am unable to think of a case when the given stmt would be false.
I would have picked D.

by kvcpk

Sun Jun 22, 2014 5:21 pm
Forum: Data Sufficiency
Topic: Powers and inequalities
Replies: 8
Views: 4261

Here's one I just made up: Is (4^-x)(y�) > 0? 1) xy < 0 2) y^x < 0 Difficulty-wise, I'd place this one in the 600-650 range Cheers, Brent 4^-x is always greater than 0 y^4 is always greater than 0. Hence the question always remains true. We dont need to look at the stmts 1 and 2. Am I missing som...

by kvcpk

Sun Jun 22, 2014 4:30 pm
Forum: Data Sufficiency
Topic: Powers and inequalities
Replies: 8
Views: 4261

Hi Gmat072014, After looking at your post, I went back to OG to do this passage. I am not a native english speaker and also found this RC much difficult. So we are on same boat. I completed reading through the passage in about 6 minutes. Did I understand each and every word? Not at all. Here's my in...

by kvcpk

Fri Jun 20, 2014 5:51 pm
Forum: Reading Comprehension
Topic: RC OG 13 - Tough one
Replies: 5
Views: 2191

We are given 2 points on the line. Equation for the line can be derived, though not necessary here. 1) x > 4 By looking at the graph, we know that whenever x is greater than 4, y is greater than 0. Hence xy>0 SUFFICIENT 2) -5 < y < 0 As per the graph, This means y is lying in the 4th quadrant. There...

by kvcpk

Mon Jun 16, 2014 5:16 am
Forum: Data Sufficiency
Topic: Geometry
Replies: 5
Views: 1523

Hello, Can you please tell me how to solve for Statement 2 here: $150 in prize money is going to be split among 6 contestants in a competition at a charity event. The person in first place receives the most money, the person in second place receives the second most, the person in third place receiv...

by kvcpk

Sun Jun 15, 2014 6:27 pm
Forum: Data Sufficiency
Topic: Did the person in second place receive at least $40?
Replies: 2
Views: 1136

Hello, Can you please help with this: If n is an integer, is n positive? 1) (2n+1)/(n+1) is an integer 2) n = -n OA: D Thanks, Sri n is an integer. 1) (2n+1)/(n+1) is an integer (n+(n+1))/(n+1) is an integer. n/(n+1) + 1 is an integer. Lets remove the +1 as integer +1 is integer. Adding +1 and -1 t...

by kvcpk

Sun Jun 15, 2014 6:17 pm
Forum: Data Sufficiency
Topic: If n is an integer, is n positive?
Replies: 12
Views: 4111

Hello, Can you please help with this: If Jesse flips a coin seven times in a row, what is the probability that the result will be heads at least five times? OA: [spoiler]29/128[/spoiler] When I saw the word at-least 5 times, I used the following approach: P(Heads at-least 5 times) = 1 - P(No heads ...

by kvcpk

Sun Jun 15, 2014 5:57 pm
Forum: Problem Solving
Topic: If Jesse flips a coin seven times in a row, probablity that
Replies: 4
Views: 7392

Hello, Can you please help with the following: A tank has both an inlet pipe and an outlet pipe. Working alone, the inlet pipe can fill up the tank in 5 hours. Working alone, the outlet pipe can empty out the tank in 15 hours. If it is desired that the tank should be filled, from empty, exactly 6 h...

by kvcpk

Sun Jun 15, 2014 5:24 pm
Forum: Problem Solving
Topic: A tank has both an inlet pipe and an outlet pipe. Working..
Replies: 3
Views: 6113

Please find the explanation in the picture attached http://s16.postimg.org/dbdx19iw1/Solution_9.jpg Total cost = manufacturing cost+variable cost --> is this something we need to be already aware of? I hope GMAT question would state that explicitly. If I look at the question as it is presented, I b...

by kvcpk

Fri Jun 13, 2014 10:38 am
Forum: Data Sufficiency
Topic: Data sufficiency problem
Replies: 5
Views: 1757

Four different objects 1,2,3,4 are distributed at random in four places marked 1,2,3,4. What is probability that none of the objects occupy the place corresponding to it's number? A) 17/24 B) 3/8 C) 1/2 D) 5/8 I am not sure what difficulty level this would fall into. If I see this question in the r...

by kvcpk

Fri Jun 13, 2014 8:02 am
Forum: Problem Solving
Topic: places probability
Replies: 10
Views: 5548

theboyleman32 wrote:assistance with this problem would be greatly appreciated!!!
5^x - 5^(x-3) = 124 * (5^y)
5^x - 5^x/5^3 = 124 * (5^y)
Taking 5^x common,
5^x(1-(1/125)) = 124 * (5^y)
5^x(124/125) = 124 * (5^y)
Canceling out 124 on both sides
5^x/125 = 5^y
5^(x-3) = 5^y
Hence y=x-3

Hope this helps!!

by kvcpk

Tue Jun 10, 2014 7:55 am
Forum: Problem Solving
Topic: Exponent Problem
Replies: 5
Views: 5127

In casual conversation, people experience little psychological discomfort in admitting that they have some particular character flaw if and only if they consider trivial the flaw to which they admit. Therefore, if in casual conversation an individual readily admits that he or she has some particula...

by kvcpk

Mon Jun 09, 2014 5:19 pm
Forum: Critical Reasoning
Topic: Can anybody help me in this question?
Replies: 2
Views: 1691