Search found 51 matches
Exponents - Does this make sense?
So I'm not crazy that this looks fishy...thanks Stu.
let X = 2exp12.
When I simplify I get
1/x + 1/x + 3/4(x) + 4/8(x)
13/4(x)
I'm tossing this test...
- by evansbd
Sat Nov 29, 2008 1:23 pm- Forum: Problem Solving
- Topic: Exponents - Does this make sense?
- Replies: 5
- Views: 1950
Exponents - Does this make sense?
The OA is A. It says: If we express the numerators as powers of 2, then we would get 1/(2exp12) + 2/(2exp13)+ 4/(2exp14) + 8/(2exp15) however I keep getting 1/(2exp12) + (2/2)/(2exp12)+ (3/4)/(2exp12) + (4/8)/(2exp12) but the OA goes on to say that their simplification reduces to 1/(2exp12) + 1/(2ex...
- by evansbd
Sat Nov 29, 2008 1:19 pm- Forum: Problem Solving
- Topic: Exponents - Does this make sense?
- Replies: 5
- Views: 1950
Exponents - Does this make sense?
I got this question off a online practice test, but it looks fishy... 1/(2exp12) + 2/(2exp13) + 3/(2exp14) + 4/(2exp15) = ? a) 1/(2exp10) b) 1/(2exp12) c) 15/(2exp15) d) 2/(2exp10) e) 23/(2exp16) ** exp = ^ and the above are the fraction 1/2 , with denominator raised to different powers I know how t...
- by evansbd
Sat Nov 29, 2008 12:21 pm- Forum: Problem Solving
- Topic: Exponents - Does this make sense?
- Replies: 5
- Views: 1950
Probability - 100 numbered balls
The OA is 1/2. Everyone has the right idea. We know that the probability of even or odd is 1/2. Here is the approach I took: Here are the possible outcomes for the balls: E+E+E = Even E+E+O = Odd E+O+O = Even E+O+E = Odd O+E+E = Odd O+E+O = Even O+O+E = Even O+O+O = Odd The OA is 1/2. Since the orde...
- by evansbd
Sat Nov 29, 2008 12:16 pm- Forum: Problem Solving
- Topic: Probability - 100 Numbered Balls
- Replies: 10
- Views: 8433
Probability - 100 Numbered Balls
A box contains 100 balls, numbered from 1 to 100. If three balls are selected at random and with replacement from the box, what is the probability that the sum of the three numbers on the balls selected from the box will be odd? A) 1/4 B) 3/8 C) 1/2 D) 5/8 E) 3/4 I wanted to see how others approache...
- by evansbd
Wed Nov 26, 2008 8:56 am- Forum: Problem Solving
- Topic: Probability - 100 Numbered Balls
- Replies: 10
- Views: 8433
- by evansbd
Fri Sep 12, 2008 7:42 am- Forum: Critical Reasoning
- Topic: Seek Explanation for Verbal Review No.7
- Replies: 3
- Views: 1851
- by evansbd
Mon Aug 25, 2008 10:14 am- Forum: GMAT Essays (AWA)
- Topic: Please Rate - Analysis of an Argument
- Replies: 1
- Views: 1839
Please Rate - Analysis of an Argument
“Last year the local television news program IN FOCUS reported in its annual car and truck safety survey that over the course of the last ten years United Motors Vehicles were involved in at least 30% fewer fatal accidents to drivers that vehicles built by any other single manufacturer. Now United i...
- by evansbd
Fri Aug 15, 2008 8:22 am- Forum: GMAT Essays (AWA)
- Topic: Please Rate - Analysis of an Argument
- Replies: 1
- Views: 1839
Admissions Essays
Dear Forum, I am an bioengineer who wants to get an MBA to help my endeavors in research oriented intellectual property in biomedical research. Ideally, I want to attend Babson with a concentration in entrprenuership. I am writing my "WHY MBA" essay and I am finding it hard not to summariz...
- by evansbd
Tue Aug 12, 2008 10:26 am- Forum: Ask Stacy Blackman
- Topic: Admissions Essays
- Replies: 1
- Views: 2638
More insight
Depending on how fast your math skills are I did this problem similarly and found some numbers that can decrease some of the calculations shown. 2L of 16% - this is 1/4 of the solution 6L of 20% - this is 3/4 of the solution (1/4)(16) + (3/4)(20) * these numbers are easily reduced .04 + .15 = .19 Th...
- by evansbd
Fri Aug 01, 2008 6:32 am- Forum: Problem Solving
- Topic: Hi, I'm thoroughly confused!!!!Need help to solve these.
- Replies: 3
- Views: 2142
Confused...
I feel like this problem is the type that you feel you need to get right if you want a chance to score highly on the gmat. I chose similar numbers in some of the graphs here but am getting an incorrect answer, does anyone see my mistake? Day Night Boxes 20 15 (3/4 of 20) Workers 25 15 (3/5 of 25) I ...
- by evansbd
Thu Jul 31, 2008 11:49 am- Forum: Problem Solving
- Topic: Work Problem
- Replies: 10
- Views: 2120
http://www.4tests.com/exams/questions.asp?googlebot=31
Question # 16
This site gives a practice test, a very simple one, with some strangely worded questions sprinkled in like the one above.
The official answer is E.
I picked C like alot of posters.
- by evansbd
Thu Jul 31, 2008 7:58 am- Forum: Data Sufficiency
- Topic: Prime Numbers....
- Replies: 5
- Views: 10381
Prime Numbers....
If q is a multiple of prime numbers, is q a multiple of r?
1) r < 4.
2) q = 18.
I started writing out primes and their multiples however I wanted to know if anyone could share their insight with this question.
OA to follow...
- by evansbd
Tue Jul 29, 2008 7:36 am- Forum: Data Sufficiency
- Topic: Prime Numbers....
- Replies: 5
- Views: 10381
sudhir3127 wrote:My Answer is 5.
m+ n = Z+4
n = e + y
m + n = z + 4 + e + y
4 + y = -5
y = -9
e + z = 10
m + n = y + (e + z) + 4
m + n = -9 + (10) + 4
m + n = 5
Hope this is clear
Sudhir can you tell me how you got the bolded part?
- by evansbd
Mon Jul 28, 2008 6:13 am- Forum: Problem Solving
- Topic: a sum
- Replies: 8
- Views: 1761
I think a good way to look at this problem is the following. part/whole = percentage (everyone knows this) We can see that Maxim will be our variable. PART 3 Quarts Minum + Maxim 3(.005) + 0.20X Whole How many quarts of Maxim added to 3 quarts Minum X + 3 part/whole = .15 3(.005) + 0.20X ___________...
- by evansbd
Mon Jul 28, 2008 6:01 am- Forum: Problem Solving
- Topic: Mixtures and Ratios
- Replies: 11
- Views: 3907