Search found 3161 matches
Can someone please help solve the following problem: If m = k · p, where k and m are different positive integers, then does m have more than 5 prime factors? (1) k has 5 different prime factors. (2) p has 5 different prime factors. Thanks. I'm going to almost agree with Vipulgoyal, but say that th...
- by Stuart@KaplanGMAT
Tue Dec 24, 2013 12:40 am- Forum: Data Sufficiency
- Topic: Integer Properties
- Replies: 9
- Views: 2143
Hi, Thanks for your reply. I had the following question about Statement I. Since rate is 60/0.5 miles/hour and distance is 120 miles, cannot we not calculate the time ? Thanks, Sri Hi Sri! You've assumed that the car's speed is constant - which is exactly what the question is designed to trick you ...
- by Stuart@KaplanGMAT
Tue Dec 24, 2013 12:32 am- Forum: Data Sufficiency
- Topic: To find the average speed
- Replies: 6
- Views: 1886
Can someone please check my solution and point out the flaw: Train X leaves Los Angeles at 10:00AM and travels East at a constant speed of x miles per hour. If another Train Y leaves Los Angeles at 11:30AM and travels East along the same tracks at speed y, then at what time will Train Y catch Train...
- by Stuart@KaplanGMAT
Mon Dec 23, 2013 8:47 pm- Forum: Problem Solving
- Topic: Rate Problem
- Replies: 3
- Views: 2689
Thanks for that Stuart.What if we just had to pick 4 consultants out of the 7?In that case we can treat it like one big selection. 7*6*5*4 =35 right? 4! All you're really doing when you apply the "slot method" to these problem is using the combinations formula: nCk = n!/k!(n-k)! When orde...
- by Stuart@KaplanGMAT
Mon Dec 23, 2013 12:16 pm- Forum: Problem Solving
- Topic: Combinatorics.Plese help.
- Replies: 7
- Views: 2285
Hello, Can you please assist with this: I was wondering if this approach is correct or if there is a easier way so that we can avoid calculating 2^11 ? Thanks a lot, Sri Hi Sri! For remainder questions, we often only need to look at the last 1 or 2 digits of the number. In this case, since we're di...
- by Stuart@KaplanGMAT
Mon Dec 23, 2013 1:13 am- Forum: Data Sufficiency
- Topic: What is the remainder?
- Replies: 5
- Views: 1527
Jennifer has 40% more stamps than peter. However, if she gives 45 of her stamps to Peter, then peter will have 10% more stamps than Jennifer. How many stamps did Jennifer begin with?[/b] Hi Scraby! First, please always post the answer choices, since they play a large role in many GMAT strategies. O...
- by Stuart@KaplanGMAT
Mon Dec 23, 2013 1:00 am- Forum: Problem Solving
- Topic: Need help on Percentage Question
- Replies: 2
- Views: 3272
Most interns who work for pay hold positions that require few skills, little experience, and also little hope for permanent placement. (A) little experience, and also (B) little experience, and with (C) little experience, and offer (D) carry little experience, and (E) carry little experience, and o...
- by Stuart@KaplanGMAT
Sun Dec 22, 2013 10:17 pm- Forum: Sentence Correction
- Topic: Most interns who work for pay hold positions...
- Replies: 2
- Views: 1626
Hello, Can you please assist with this: If x > y > 0, what is the value of x – y ? (1) sq. root (x) - sq. root (y) = 1 (2) sq. root (x - y) = sq. root (11) OA: B Hi Sri! We know that both x and y are positive and that x is greater than y. We need to find an exact value for (x-y). 1) tells us that...
- by Stuart@KaplanGMAT
Sun Dec 22, 2013 9:43 pm- Forum: Data Sufficiency
- Topic: What is the value of x - y ?
- Replies: 2
- Views: 1939
Finally, since 2 of the consultants can't work together, we need to remove these specific teams from the 35 possibilities. Ill use the slot method here,order doesnt matter at all since all are going in to the same committee. 2*1*5*4 = 5/3 4*3*2*1 35-(5/3) should be our answer for the consultants,ra...
- by Stuart@KaplanGMAT
Sun Dec 22, 2013 9:36 pm- Forum: Problem Solving
- Topic: Combinatorics.Plese help.
- Replies: 7
- Views: 2285
Hi! This may look like a probability question, but it's really all about geometry. The question is really asking "what portion of ABCD is shaded?" This question is super quick if you use your graph-lined noteboard to draw the shape to scale - you'll quickly see that the mini square in the ...
- by Stuart@KaplanGMAT
Sun Dec 22, 2013 1:37 am- Forum: Problem Solving
- Topic: Probabilit
- Replies: 3
- Views: 1378
A certain store sells small, medium and large toy trucks in each of the colors red blue green and yellow. The store has an equal number of trucks of each possible color-size combination. If Paul wants a medium red truck and his mother will randomly select one of the trucks in the store, what is the...
- by Stuart@KaplanGMAT
Sun Dec 22, 2013 1:31 am- Forum: Problem Solving
- Topic: Probability Again
- Replies: 3
- Views: 2401
Sorry, the question was just to solve or simplify. However, my equation wasn't clear and I accidentally put an equals sign where there should be a plus sign. The equation I'm supposed to simplify is: √[(x^2)(y^3) + (3x^2)(y^3)] No worries! It didn't really affect your question or my response, I w...
- by Stuart@KaplanGMAT
Sun Dec 22, 2013 1:22 am- Forum: Problem Solving
- Topic: Square Root of Variables
- Replies: 4
- Views: 1672
What is the number of members of Club X who are at least 35 years of age? 1) Exactly 3/4 of the members of club X are under 35 years of age. 2) The 64 women in Club X constitute 40 percent of the club's membership. does it matter whether there are children in the club? Hi! We only care about at lea...
- by Stuart@KaplanGMAT
Sat Dec 21, 2013 7:25 pm- Forum: Data Sufficiency
- Topic: Club members at least 35yrs old
- Replies: 2
- Views: 1396
MGMAT - Algebra Guide Chapter 4: Roots, Problem Set #11 Solve of simplify the following problem: √x^2y^3 = 3x^2y^3 Answer = [spoiler]2xy√y[/spoiler] Why not [spoiler]2x√2y^3[/spoiler]? Hi! First, the problem you posted doesn't actually include a question, so I'm not sure for what you're solvi...
- by Stuart@KaplanGMAT
Sat Dec 21, 2013 6:33 pm- Forum: Problem Solving
- Topic: Square Root of Variables
- Replies: 4
- Views: 1672
Over the past few years, banks have systematically raised their old fees and invented new ones that are harder and harder for consumers to avoid . (A) banks have systematically raised their old fees and invented new ones that are harder and harder for consumers to avoid (B) banks are systematically...
- by Stuart@KaplanGMAT
Sat Dec 21, 2013 11:08 am- Forum: Sentence Correction
- Topic: Bank fees
- Replies: 3
- Views: 1637