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The only contents of a container are 10 disks that are each numbered with a different positive integer from 1 through 10
GMAT Math
The only contents of a container are 10 disks that are each numbered with a different positive integer from 1 through 10
The only contents of a container are 10 disks that are each numbered with a different positive integer from 1 through 10, inclusive. If 4 disks are to be selected one after the other, with each disk selected at random and without replacement, what is the probability that the range of the numbers on ...
- by mensanumber
Sun Nov 22, 2020 5:09 pm- Forum: GMAT Math
- Topic: The only contents of a container are 10 disks that are each numbered with a different positive integer from 1 through 10
- Replies: 1
- Views: 8577
If a two digit integer is divided by an integer formed by reversing its digits, what could be the maximum remainder? 1) 9 2)27 3)36 4)45 5) 54 How about 89 divided by 98? 89 divided by 98 equals 0 with remainder 89 I don't see 89 as an answer choice. Am I missing something? Cheers, Brent Sorry, jus...
- by mensanumber
Tue Apr 17, 2018 1:31 pm- Forum: Problem Solving
- Topic: Consider two integers: an original two digits integer and
- Replies: 3
- Views: 831
Consider two integers: an original two digits integer and
Consider two integers: an original two digits integer and the integer formed by reversing the digits of this original integer. If the bigger of these two integers is divided by the other integer, what could be the maximum remainder?
1) 9
2)27
3)36
4)45
5) 54
- by mensanumber
Tue Apr 17, 2018 4:44 am- Forum: Problem Solving
- Topic: Consider two integers: an original two digits integer and
- Replies: 3
- Views: 831
In how many ways can a person post 5 letters in 3 letter boxes? (A) 480 (B) 1024 (C) 54 (D) 3^5 (E) 5^3 Apparently, the solution is quite simple here: each letter will have 3 boxes to choose from and so answer 3^5. But I am having a tough time visualizing this solution. The way I am looking at is: ...
- by mensanumber
Wed Mar 07, 2018 10:15 am- Forum: Problem Solving
- Topic: In how many ways can a person post 5 letters in 3 letter box
- Replies: 9
- Views: 6986
In how many ways can a person post 5 letters in 3 letter box
In how many ways can a person post 5 letters in 3 letter boxes? (A) 480 (B) 1024 (C) 54 (D) 3^5 (E) 5^3 Apparently, the solution is quite simple here: each letter will have 3 boxes to choose from and so answer 3^5. But I am having a tough time visualizing this solution. The way I am looking at is: ...
- by mensanumber
Wed Mar 07, 2018 9:58 am- Forum: Problem Solving
- Topic: In how many ways can a person post 5 letters in 3 letter box
- Replies: 9
- Views: 6986
In how many ways can a person post 5 letters in 3 letter box
In how many ways can a person post 5 letters in 3 letter boxes? (A) 480 (B) 1024 (C) 54 (D) 3^5 (E) 5^3 Apparently, the solution is quite simple here: each letter will have 3 boxes to choose from and so answer 3^5. But I am having a tough time visualizing this solution. The way I am looking at is: ...
- by mensanumber
Wed Mar 07, 2018 8:28 am- Forum: Problem Solving
- Topic: In how many ways can a person post 5 letters in 3 letter box
- Replies: 9
- Views: 6986
In how many ways can a person post 5 letters in 3 letter box
In how many ways can a person post 5 letters in 3 letter boxes?
(A) 480
(B) 1024
(C) 54
(D) 3^5
(E) 5^3
- by mensanumber
Wed Mar 07, 2018 8:18 am- Forum: Problem Solving
- Topic: In how many ways can a person post 5 letters in 3 letter box
- Replies: 9
- Views: 6986
On a railway route between two places A and B, there are 10
On a railway route between two places A and B, there are 10 stations on the way. If 4 new stations are to be added, how many types of new tickets will be required if each ticket is issued for a one-way journey?
1) 108
2) 14
3) 48
4) 96
- by mensanumber
Wed Mar 07, 2018 5:54 am- Forum: Problem Solving
- Topic: On a railway route between two places A and B, there are 10
- Replies: 3
- Views: 5780
There are three parallel straight lines
There are three parallel straight lines. Two points A and B are marked on the first line, points C and D are marked on the second line and points E and F are marked on the third line. Each of these six points can move to any position on its respective straight line. What is the maximum number of tri...
- by mensanumber
Tue Mar 06, 2018 11:55 pm- Forum: Problem Solving
- Topic: There are three parallel straight lines
- Replies: 1
- Views: 865
Here is what is wrong with B: Assumption is something that has to be necessarily true BUT which is not already stated in the argument. So if assumption is not true the argument will fall apart. (Negation test) B- The medical expenses incurred by employees who are required to participate in the fitne...
- by mensanumber
Fri Jul 15, 2016 10:16 am- Forum: Critical Reasoning
- Topic: prep question
- Replies: 10
- Views: 8385
Thanks for your reply @GMATGuruNY. I followed the exact same steps except for in st1 instead of "Total profit = (2)(434) + (3.5)(400) = 868 + 1400 = more than 2000." I considered "(2)(418) + (3.5)(416)" and wasted a lot of time in calculations. But my bigger problem is understand...
- by mensanumber
Mon Dec 14, 2015 10:56 pm- Forum: Data Sufficiency
- Topic: A company makes and sells two products, P and Q.
- Replies: 3
- Views: 5277
A company makes and sells two products, P and Q.
A company makes and sells two products, P and Q. The costs per unit of making and selling P and Q are $8.00 and $9.50, respectively, and the selling prices per unit of P and Q are $10.00 and $13.00, respectively. In one month the company sold a total of 834 units of these products. Was the total pro...
- by mensanumber
Sat Dec 12, 2015 12:57 pm- Forum: Data Sufficiency
- Topic: A company makes and sells two products, P and Q.
- Replies: 3
- Views: 5277
I think most of the gmat problems could have elegant solutions like the one given by Rich below. Though this one is not a very difficult question, i think it has implications. Test writers could make it into a difficult question by changing the answer choices as follows: 1) x=z^p & 2)y=(z-1)^q.....
- by mensanumber
Sat Dec 05, 2015 10:34 am- Forum: Data Sufficiency
- Topic: If x, y, and z are positive integers..............
- Replies: 5
- Views: 7611
Great- will use Bellcurve questions to practice my improvement area questions. Could never thank you enough for all your advice. At what stage do you think I should include bellcurve questions? If time is a concern what material from the above would see replaced by bellcurve questions? YOu seem to h...
- by mensanumber
Sat Dec 05, 2015 5:30 am- Forum: GMAT Strategy
- Topic: Strategies for preventing careless mistakes ...
- Replies: 27
- Views: 21001
Thanks so much for a detailed reply again. I wish I had used this forum more before writing my last GMAT. :) Here is a fairly comprehensive guide to handling three overlapping sets questions in various ways. http://www.beatthegmat.com/pizza-hoagies-and-tacos-t285217.html Exactly what I realized thro...
- by mensanumber
Fri Dec 04, 2015 12:53 pm- Forum: GMAT Strategy
- Topic: Strategies for preventing careless mistakes ...
- Replies: 27
- Views: 21001