Search found 504 matches
Clarification needed on combinatorics problem
In how many ways can 16 different gifts be divided among four children such that each child receives exactly four gifts? OA [spoiler]16! ÷ (4!)^4[/spoiler] I already got the answer by doing 16C4 * 12C4 * 8C4 * 4C4 My question is, since the four children are NOT identical, shouldn't the above calcu...
- by knight247
Fri Nov 21, 2014 10:03 am- Forum: Problem Solving
- Topic: Clarification needed on combinatorics problem
- Replies: 6
- Views: 4648
Circular Motion Problem
X, Y & Z are moving along a circular path of 500 yards and speeds 10, 20 & 45 yards/ minute respectively. All three of them start from the same point and move in the same direction. (A) When and where will all three of them meet for the first time? (B) At what time will all three of them me...
- by knight247
Tue Nov 18, 2014 9:33 am- Forum: Problem Solving
- Topic: Circular Motion Problem
- Replies: 8
- Views: 2564
Two Cyclists
Two cyclists start simultaneously towards each other from cities Newtown and Oldtown , which are 28 miles apart . An hour later, they meet and keep pedaling with the same speed without stopping . The second cyclist arrives at Oldtown 35 minutes later than the first arrives at Newtown. Find the speed...
- by knight247
Wed Oct 29, 2014 8:14 am- Forum: Problem Solving
- Topic: Two Cyclists
- Replies: 3
- Views: 5857
Two confusing CR questions. Expert help needed.
(1) According to economists, social activists wrongly portray corporations as institutions that are driven solely by the motive of profit/revenue maximization. They contend that the activists’ argument that no corporation makes an investment from which it does not expect a return is not always tr...
- by knight247
Thu Sep 04, 2014 5:38 pm- Forum: Critical Reasoning
- Topic: Two confusing CR questions. Expert help needed.
- Replies: 1
- Views: 1282
Expert help needed: Very strange admissions situation
Hi, I'm looking to apply for a US or Canadian MBA in the fall of 2015, and I have a VERY strange admissions problem that I just can't wrap my head around. I'm currently a small business owner since the last almost three years, but previously I had worked with the Business Process Outsourcing (BPO)un...
- by knight247
Tue Mar 25, 2014 2:39 am- Forum: The Application Process
- Topic: Expert help needed: Very strange admissions situation
- Replies: 2
- Views: 2143
Expert Help Required on Counting Problem
There are 5 people – A, B, C, D and E. They have to sit around a circular table with 5 chairs such that A can sit neither next to D nor next to E. How many such distinct arrangements are possible? I can solve the problem by the regular method, where one seats : A in 1 way; B in 2 ways (on either ...
- by knight247
Tue Jul 30, 2013 9:08 am- Forum: Problem Solving
- Topic: Expert Help Required on Counting Problem
- Replies: 6
- Views: 1489
- by knight247
Wed Jul 24, 2013 5:33 am- Forum: Problem Solving
- Topic: Deleted
- Replies: 0
- Views: 876
- by knight247
Fri Jul 19, 2013 3:03 pm- Forum: Problem Solving
- Topic: permutation question
- Replies: 2
- Views: 4100
Challenging Speed Problem
Two people A and B start from P and Q (Distance = D) at the same time towards each other. They meet at a point R, which is at a distance of 0.4D from P. They continue to move to and from between the two points. Find the distance from point P at which the fourth meeting takes place. (A) 0.8D (B) 0.6D...
- by knight247
Fri Jul 19, 2013 2:47 pm- Forum: Problem Solving
- Topic: Challenging Speed Problem
- Replies: 3
- Views: 7135
Speed Problem
Ron and Shawn run a race of 2000 m. First, Ron gives Shawn a 200 m start and beats him by 30 seconds. Next, Ron gives Shawn a 3 minute start and is beaten by a 1000 m. Find the time in minutes in which Ron and Shawn run the race separately. (A) 8,10 (B) 4,5 (C) 5,9 (D) 6,9 (E) 8,12 OA is B Detailed ...
- by knight247
Fri Jul 19, 2013 6:40 am- Forum: Problem Solving
- Topic: Speed Problem
- Replies: 3
- Views: 1337
Tough Speed, Rate, Time DS
Don't have an OA for this one. However, I get the answer C
Detailed explanations would be appreciated. Many thanks in advance.
- by knight247
Sun Jun 30, 2013 12:35 am- Forum: Data Sufficiency
- Topic: Tough Speed, Rate, Time DS
- Replies: 2
- Views: 1311
Tough Speed, Rate, Time DS
Don't have an OA for this one. However, I get the answer C
Detailed explanations would be appreciated. Many thanks in advance.
- by knight247
Sun Jun 30, 2013 12:34 am- Forum: Data Sufficiency
- Topic: Tough Speed, Rate, Time DS
- Replies: 1
- Views: 987
Thanks a ton, Anju. I just edited my post. There was the type-o. My exact question was: By how many TIMES does the output of a man exceed that of a woman?
- by knight247
Fri Mar 15, 2013 2:27 am- Forum: Problem Solving
- Topic: Rate/Work Problem 1
- Replies: 3
- Views: 3944
Rate/Work Problem 3
Two women Ruth and Ursula are working on an embroidery design. If Ursula works alone, she needs eight more hours to complete the design than if they both worked together. If Ruth works alone, she would need 4.5 hours more to complete the design than if they both worked together. What time would it t...
- by knight247
Thu Mar 14, 2013 11:49 pm- Forum: Problem Solving
- Topic: Rate/Work Problem 3
- Replies: 3
- Views: 977
Rate/Work Problem 2
A, B and C need a certain unique time to do a certain work. C needs 1 hours less than A to complete the work. Working together, they require 30 minutes to complete 50% of the job. The work also gets completed if A and B start working together and A leaves after 1 hour and B works for a further 3 hou...
- by knight247
Thu Mar 14, 2013 11:45 pm- Forum: Problem Solving
- Topic: Rate/Work Problem 2
- Replies: 3
- Views: 6081