Search found 46 matches
Tricky remainder problem
When the positive integer k is divided by the positive integer n , the remainder is 11. If k/n = 81.2 , what is the value of n.
A) 9
B) 20
C) 55
d) 70
e) 81
- by mgm
Tue Oct 01, 2013 1:33 pm- Forum: Problem Solving
- Topic: Tricky remainder problem
- Replies: 9
- Views: 14856
- by mgm
Sat Sep 28, 2013 1:50 pm- Forum: Problem Solving
- Topic: probability.
- Replies: 16
- Views: 9637
Brent are the distribution problems modeled after real GMAT problems ?Brent@GMATPrepNow wrote:If anyone is interested, here's a related question to try: http://www.beatthegmat.com/very-tricky- ... 25349.html
Cheers,
Brent
- by mgm
Tue Sep 24, 2013 4:03 pm- Forum: Problem Solving
- Topic: Combinations
- Replies: 9
- Views: 2968
-Ing form
Hello,
I am wondering if someone happens to have a handy list of rules for the Ing form of a verb.
E.g as a modifier indicating a continuing action
As a gerund with 'the' and the Ing form...
Thanks in advance for your response ...
- by mgm
Sun Sep 22, 2013 6:52 am- Forum: Sentence Correction
- Topic: -Ing form
- Replies: 2
- Views: 1891
The GMAT would restrict this problem to POSITIVE integers: Is the positive integer n odd? 1. n is divisible by 3. 2. 2n divisible by twice as many +ve integers as n. OA is B Statement 1: n is divisible by 3. Since it's possible that n=3 or that n=6, INSUFFICIENT. Statement 2: 2n is divisible by twi...
- by mgm
Sat Sep 21, 2013 4:07 am- Forum: Data Sufficiency
- Topic: help
- Replies: 6
- Views: 1987
Hi fourteenstix, It's normally best to list just 1 question per post, but I'll answer both questions here: First, the probability question. This question has LOTS of details that you have notice if you're going to answer it correctly. You'll notice that the answers have 8 as a common denominator (t...
- by mgm
Wed Sep 18, 2013 4:40 am- Forum: GMAT Math
- Topic: GMATPrep Questions
- Replies: 8
- Views: 4293
Arithmetic Progression
Just wondering , what is the best way to solve the following :
What is the sum of sum of odd numbers between 50 and 100 and sum of even numbers between 200 and 300 ?
- by mgm
Wed Sep 18, 2013 4:28 am- Forum: Problem Solving
- Topic: Arithmetic Progression
- Replies: 4
- Views: 3932
Number Line problem
Is the number x positive?
(1) On the number line, 0 is closer to x – 1 than to x.
(2) On the number line, 0 is closer to x than to x + 1.
It is a good problem , probably a repeat post...
- by mgm
Wed Sep 11, 2013 4:20 am- Forum: Data Sufficiency
- Topic: Number Line problem
- Replies: 4
- Views: 1956
Mitch, I used your approach towards solving this but I ended up with a different solution , 1 - P(All 3 types chosen) = 1 - (3*3*2*2) / 9C4 = 5/7 Here was my thought process(flawed :( ) Total possible ways = Choose 4 cups out of 9 where order does not matter Fav' Outcomes = 3ways to choose the 1st c...
- by mgm
Sun Sep 08, 2013 4:46 pm- Forum: Problem Solving
- Topic: Help
- Replies: 4
- Views: 1377
Mitch ,I for some reason got the following :
Possible combinations couples together: 3!*2*2 ...considering that a couple is one person and there are 3 seats. (120-48)/120 = 72/120
Not sure which combinations am I missing
- by mgm
Sat Aug 17, 2013 4:27 am- Forum: Problem Solving
- Topic: Couplea
- Replies: 2
- Views: 1349
Looking for values of a or b
1) a + b = -1 cant find values
2) -6 = a*b
Solving we can get the values for a or b
- by mgm
Thu Aug 15, 2013 4:35 pm- Forum: Data Sufficiency
- Topic: How to do this?
- Replies: 4
- Views: 1464
- by mgm
Thu Aug 15, 2013 4:25 pm- Forum: Problem Solving
- Topic: Different routes.
- Replies: 9
- Views: 3153
- by mgm
Tue Aug 13, 2013 4:28 am- Forum: Problem Solving
- Topic: Can someone help explain please? Ratios
- Replies: 10
- Views: 2067
A) Formula for Standard Deviation is sqrt[1/n(xi - mean)^2] ... both the mean and each of the elements are reduced by 30% and hence the SD is reduced by 30%.
B) Mean alone does not provide any insight into the SD change..
- by mgm
Tue Aug 13, 2013 4:14 am- Forum: Data Sufficiency
- Topic: Experts Help
- Replies: 4
- Views: 1453
Brent,
If you want to find a point below the X Axis that is equidistant from the two points and get the distance from say (0,-y) and the two points then you get a different answer...
- by mgm
Tue Aug 13, 2013 3:42 am- Forum: Problem Solving
- Topic: Correct Solution
- Replies: 7
- Views: 1701