Search found 25 matches
I like this a lot.
However, if you make more of them I suggest that the video links open up a new tab because it doesn't keep track of the slide you were on before that.
Are you making more?
- by gmatbeater1989
Tue Dec 01, 2015 5:51 pm- Forum: Critical Reasoning
- Topic: Everything you need to know about Critical Reasoning
- Replies: 3
- Views: 2713
An alternate approach: Let the 6 mobsters be A, B, C, D, F and J. Direction of the line: Front....Back. Number of options for A = 6. (Any of the 6 positions.) Number of options for B = 5. (Any of the 5 remaining positions.) Number of options for C = 4. (Any of the 4 remaining positions.) Number of ...
- by gmatbeater1989
Tue Nov 24, 2015 10:36 am- Forum: Problem Solving
- Topic: Combinations
- Replies: 12
- Views: 3929
4C2 - 1 = 5 (D)oquiella wrote:How many two-element subsets of {1,2,3,4} are there that do NOT contain the pair of elements 2 and 4.
A. One
B. Two
C. Four
D. Five
E. Six
- by gmatbeater1989
Mon Nov 23, 2015 11:37 am- Forum: Problem Solving
- Topic: Please help
- Replies: 5
- Views: 2315
- by gmatbeater1989
Mon Nov 23, 2015 11:27 am- Forum: Problem Solving
- Topic: Combinations
- Replies: 12
- Views: 3929
A marketing firm determined that, of 200 households surveyed, 80 used neither Brand A nor Brand B soap, 60 used only Brand A soap, and for every household that used both brands of soap, 3 used only Brand B soap. How many of the 200 households surveyed used both brands of soap? (A) 15 (B) 20 (C) 30 ...
- by gmatbeater1989
Tue Oct 20, 2015 3:45 pm- Forum: Problem Solving
- Topic: Diagnostic Test Q6 - Overlapping Sets
- Replies: 6
- Views: 1794
Can anyone elaborate on using the alligation method for this question?nbhardwaj wrote:Suppose you like 1% milk, but you have only 3% whole milk and ½% low fat milk. How much of each should you mix together to make an 8 ounce cup of 1% milk?
- by gmatbeater1989
Tue Oct 20, 2015 3:19 pm- Forum: Problem Solving
- Topic: Math question please help
- Replies: 4
- Views: 1596
There are 2 bars of copper-nickel alloy. One bar has 2 parts of copper to 5 parts of nickel. The other has 3 parts of copper to 5 parts of nickel. If both bars are melted together to get a 20 kg bar with the final copper to nickel ratio of 5:11. What was the weight of the first bar? (A) 1 kg (B) 4 ...
- by gmatbeater1989
Tue Oct 20, 2015 3:16 pm- Forum: Problem Solving
- Topic: Mixture/ratio problem .
- Replies: 9
- Views: 3054
I originally got this question wrong because I thought it asked for the number of females. Then I did the question by assuming that there are 100 people survey since that works with percents. My question is this: when the question asks for a percent or fraction, can I always use a nice number for th...
- by gmatbeater1989
Tue Oct 20, 2015 3:08 pm- Forum: Data Sufficiency
- Topic: Weighted Average
- Replies: 9
- Views: 2542
On a business trip, 30 percent of 60 sales representatives will be given accommodations at Hotel XYZ and the remaining 70 percent will be given accommodations at Hotel ABC. However, 55 percent of the sales representatives prefer to stay at Hotel XYZ and 45 percent prefer to stay at Hotel ABC. What ...
- by gmatbeater1989
Tue Oct 20, 2015 2:50 pm- Forum: Problem Solving
- Topic: Hotels
- Replies: 7
- Views: 2362
A marketing firm determined that, of 200 households surveyed, 80 used neither Brand A nor Brand B soap, 60 used only Brand A soap, and for every household that used both brands of soap, 3 used only Brand B soap. How many of the 200 households surveyed used both brands of soap? (A) 15 (B) 20 (C) 30 ...
- by gmatbeater1989
Tue Oct 20, 2015 2:44 pm- Forum: Problem Solving
- Topic: Diagnostic Test Q6 - Overlapping Sets
- Replies: 6
- Views: 1794
How many different five-digit codes can be picked from the digits 1 through 6 if the middle digit must be odd and no two digits might be the same? A) 420 B) 360 C) 180 D) 120 E) 60 Ignoring the part about the middle digit having to be odd, there are 6x5x4x3x2 codes Half of those will have an odd nu...
- by gmatbeater1989
Wed Oct 14, 2015 10:52 am- Forum: Problem Solving
- Topic: five digit codes
- Replies: 5
- Views: 1769
==> In the original condition there are 2 variables (x,y) thus we need 2 equations to match the number of variables (This is essential in solving the problem). Both conditions (1) and (2) have 1 equations each, thus C is likely the answer and it actually turns out that C is the answer. That seems t...
- by gmatbeater1989
Wed Oct 14, 2015 10:48 am- Forum: Data Sufficiency
- Topic: permutation n combination
- Replies: 14
- Views: 3774
A palindrome is a number that reads the same forward and backward. For example, 2442 and 111 are palindromes. If 5 digits palindromes are formed using one or more of the digits 1, 2 and 3 , how many such palindromes are possible ? a) 12 b) 15 c) 18 d) 24 e) 27 All we need to do is figure out how ma...
- by gmatbeater1989
Wed Oct 14, 2015 10:45 am- Forum: Problem Solving
- Topic: Palindrome 5 digit
- Replies: 9
- Views: 10757
In the first statement, you showed why it's sufficient. In the second one, you plugged in numbers. How did you know to plug in numbers? Why didn't you do that for statement 1? The strategy you employ is a matter of taste/instinct. You certainly could pick numbers for statement 1. Say n + 1 = 3. The...
- by gmatbeater1989
Mon Oct 12, 2015 9:26 pm- Forum: Data Sufficiency
- Topic: Gmat prep remainder
- Replies: 7
- Views: 2180
Marty/Brent,
In the first statement, you showed why it's sufficient. In the second one, you plugged in numbers. How did you know to plug in numbers? Why didn't you do that for statement 1?
- by gmatbeater1989
Mon Oct 12, 2015 9:40 am- Forum: Data Sufficiency
- Topic: Gmat prep remainder
- Replies: 7
- Views: 2180