## Search found 13 matches

No the answer is 27

9*6 = 54 which is even so you preform the (F) 1/2 *m

I don't follow this either, it seems it should be 81.

- by mikeclarke44

Sat Jul 07, 2007 11:04 am- Forum: Problem Solving
- Topic: GMAT Prep: Functions
- Replies:
**6** - Views:
**1878**

- by mikeclarke44

Fri Jun 15, 2007 10:37 pm- Forum: Problem Solving
- Topic: sqr root * exponents
- Replies:
**7** - Views:
**2235**

Still not following you.

I understand that SR10 + SR10 = 2SR10

but you lost me when you said 2SR10 = SR40

- by mikeclarke44

Fri Jun 15, 2007 10:45 am- Forum: Problem Solving
- Topic: sqr root * exponents
- Replies:
**7** - Views:
**2235**

##### sqr root * exponents

I seem to be close on this one but something in my math seems off. Of the following integers which is the closest approx to (sqr root 2 + sqr root 5)^2 a) 7 b) 10 c) 13 d) 15 e) 17 I get (SR 2 + SR 5)(SR 2 + SR 5) 2 + SR10 + SR10 + 5 7 + SR20 7 + SR4 + SR 5 9 + SR5 Which probabily 11+ a little bit m...

- by mikeclarke44

Fri Jun 15, 2007 7:32 am- Forum: Problem Solving
- Topic: sqr root * exponents
- Replies:
**7** - Views:
**2235**

Did you say the answer was (C)? If you back solve the answer it might be easier 1). says x>0, so plug in 1 to the equation (1-1^5)/1-1 < 1/(1-1) = 0 < 1/0 insuffient 2). says x<1, so plug in 0 (1-0^5)/1-0 < 1/(1-0) = 1<1 insuffient Together they say that x is between 0 and 1 If you plug in 1/2 into ...

- by mikeclarke44

Wed Jun 13, 2007 8:15 am- Forum: Data Sufficiency
- Topic: inequality question
- Replies:
**2** - Views:
**2335**

It is (x+z)/2

In the first problem, I did come up with 4C2 = 6, but I thought since there were two combinations it would be 2/6. Close but no cigar!!

- by mikeclarke44

Wed Jun 13, 2007 7:36 am- Forum: Problem Solving
- Topic: Gmat preview questions
- Replies:
**6** - Views:
**3910**

##### Gmat preview questions

Here are a couple of recent ones that I am unable to figure out. If 2 of the 4 expressions, x+y, x+5y, x-y, and 5x -y are choosen at random, what is the probabilty that their product will be of the form x^2 - (by)^2, where b is an integer? a). 1/2 b). 1/3 c). 1/4 d). 1/5 e). 1/6 The answer is (e) y<...

- by mikeclarke44

Tue Jun 12, 2007 5:33 pm- Forum: Problem Solving
- Topic: Gmat preview questions
- Replies:
**6** - Views:
**3910**

- by mikeclarke44

Mon Jun 11, 2007 1:21 pm- Forum: Data Sufficiency
- Topic: GMAT prep question
- Replies:
**6** - Views:
**3183**

Yes,

but if you had a 2 to 1 ratio of cows to pigs and you knew there were 40 pigs and cows

wouldn't you have 2/3 * 40 cows

and 1/3 x 40 pigs????

- by mikeclarke44

Sun Jun 10, 2007 5:57 pm- Forum: Data Sufficiency
- Topic: GMAT prep question
- Replies:
**6** - Views:
**3183**

#27

I don't know why they posted it incorrect. I come up with a value for r when I use #1 and #2

1). r=3m

2). r/2 + m/2 =12 r + m = 24

3m + m = 24

4m = 24

m= 6, r=18

That answer should have been (C)

- by mikeclarke44

Sun Jun 10, 2007 1:34 pm- Forum: GMAT Math
- Topic: GMATPrep Questions
- Replies:
**16** - Views:
**9107**

#27

I don't know why they posted it incorrect. I come up with a value for r when I use #1 and #2

1). r=3m

2). r/2 + m/2 =12 r + m = 24

3m + m = 24

4m = 24

m= 6, r=18

That answer should have been (C)

- by mikeclarke44

Sun Jun 10, 2007 1:33 pm- Forum: GMAT Math
- Topic: GMATPrep Questions
- Replies:
**16** - Views:
**9107**

- by mikeclarke44

Sun Jun 10, 2007 1:22 pm- Forum: Problem Solving
- Topic: Stumbler
- Replies:
**4** - Views:
**1649**

##### Stumbler

I have been struggling to figure out how this anwer is performed.

2^(4-1)^2

------------

2^3-2

Answers

a). 2^8

b). 2^7

c). 2^5

d). 2^3

e). 2^1

The correct anwer is (a), but I have no idea how they got there!!

- by mikeclarke44

Sat Jun 09, 2007 2:05 pm- Forum: Problem Solving
- Topic: Stumbler
- Replies:
**4** - Views:
**1649**