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Journey to my MBA

Monday, May 31, 2004

Memorial Day

Studied about 5 hours today. Did a major cleaning of the house with Jane. Feels good to have a clean house. Went through Kaplan's math questions in their study book. Yes all of them. The questions are supposed to be harder than Princeton Review questions. I think it's a bit true. But not by a lot. Princeton has some major questions too. One Kaplan question, I still don't understand is:
If x and y are both positive integers and x>=y, what is the units' digit of
( x y)2
(10 - 9 ) That's actually 10 to the x minus 9 to the power of y with the whole equation squared. Would you believe the answer is 1? I honestly think the question is stinking vague as heck.

Bothered me for a couple of days, but I'm over it. Cuz I saw the same kind of question on a Princeton Review test and knew that the goal was to find the last digit of the number. i.e. 931 the unit digit is 1. Maybe if they wanted the 3, they would have said, tenth unit digit.

A Princeton question that really got me today that my wife and I can't figure out is

Which number in set P has a value greater than that of every other member of set P, if all the members of set P are negative integers?
(1) Each member of set P is the product of -1 and a prime number.
(2) At least one member of P is even

(1) Alone is sufficient
(2) Alone is sufficient
(3) Both (1) and (2) are needed
(4) Each alone is sufficient
(5) (1) and (2) together are not sufficient.

I know the answer. I just don't know why it's right. If you want the answer let me know with a comment. Or if you know what the right answer is and why... that would be better.

The Kaplan test I took resulted in 22 right for Math. Assuming equiv verbal.. this would give me about a 530.
The Princeton test I took after another few hours of study resulted in 25 right for Math. Assuming an equiv verbal, this would give me about a 610.

I'd like to see myself getting 720 average minimum on all the tests I take before going in on July 17th for my test.

Read anothers MBA log today and he noted that he felt a 700 score was needed to get one into the HBS tier. I hope that's not true. I have a 3.4 gpa from undergraduate and thought maybe a 630 was what I needed along with my management resume and background. I'm so stinking envious of those that are writing weblogs about what the experience is like. I soooo see myself there. I can totally picture it. That's how those weblogs of others help me. It helps me to visualize it instead of being an obscure thing in the back of my head causing unnecessary anxiety.

Talked to my wife today about considering calling an admissions consulting group to find out how they help and what it costs. I'm rounding off the costs to be about $1000 to $1500. I have a friend who applied 2 years in a row now and didn't get into any of the schools he applied to. I'm guessing he had at least a 3.3 gpa and I know he had a 570 on his highest scoring GMAT. I just don't want to go through that kind of heartache.

Tommorrow I'm going to call my undergraduate and see what they've come up with in approval for the two classes to graduate. The only session at UCSC extension for Microbiology is tommorrow night. Although the class started, they said I could still join the class. Man, I need to pray tonight that I can deal with tommorrow well and with the utmost wisdom and tenacity and not to procrastinate my calls or follow-ups and decisions because the situation is so hard to deal with. I think maybe what I should have been doing all along is contacting schools with Microbiology courses as regular class scheduled sessions and looked at their timing and availability.. and costs instead of giving my anxiety about what to do next. That way, at least I'd know what the worst scenario would entail. I'm remembering what my brother-in-law's father told me last Christmas who bought a $450,000 commercial building 24 years ago which is now being purchased by Costco for a contract valued at over 70 million dollars. He was driving and saw the building sale sign and bought it, knowing the location was a great one next to the freeway. He had a buyers agreement in his shirt pocket with a pre-approved loan amount up to 2 million from the bank. He did this knowing that he never knew when a good opportunity would come up. He said with years of wisdom, "Success favors the prepared person. Chance favors those who make the effort to plan for opportunity."

4 Comments:

Blogger mba07 said...

hi,
About the data sufficiency Q I think that each alone is needed to answer the question. here's why. If you took 1 alone you'd get the set { -2,-3,-5,-7....}. If you took 2 alone you'd get the set {-1,-2,-3,-4...}. In either case you've got a unique answer i.e. -2 in the first casae and -1 in the second case.
If you've got a different answer do post your comments. It'd be interesting to read it..:)
about the (xy)2 Kaplan problem, could you post the answer choices as well? it seems a little difficult to figure out the correct answer by reading the question alone cause it sounds vague.

12:21 PM  
Blogger Dave for MBA said...

The answer to the data suff. Q was actually C, both are needed. I actually chose A. My reasoning was that Choice A states that each member is a product of -1 and is also a prime number. I included prime numbers 1,2,3,5,7,11,13,17,19,23 etc. You'll notice that I included 2 as a prime number... because it is. Choice 2 states that even numbers are included. You'll also notice that all the prime numbers I listed are odd except for 2. So, If I just stuck with choice A, I'd get 1*-1 = -1 as my largest number. However, if you remove 1 as a choice and take choice (2) into account, then your next largest number would be 2*-1=-2. Choice A according to me is a prime number and one shouldn't need to mention prime numbers plus the one even number one. So my confusion is... 1) why does one have to state prime numbers plus the even one. 2) Is 2 not really a prime number by some math definition that I don't know about? I define a prime number as a number divisible by ONLY and itself.

3:37 PM  
Blogger mba07 said...

This comment has been removed by a blog administrator.

1:05 PM  
Blogger mba07 said...

hey, here's a correction to my previous post. Since 1 is neither prime nor composite -1 would not be in either set. That given I would change my answer to C. Why? Cause

a) With statement 1 you can construct numerous sets such as { -2,-3,-5,-7...}, { -3,-7,-11...}. with statement 2 you could construct numerous sets such as { -2,-3,-7,-11...},{-2,-11,-13,..}.
b) However, putting statements 1 and 2 together, the first element of the set HAS to be -2. Hence whatever the set maybe the greatest element will be -2.
Hence the answer is C - both statements are needed to answer the question. My apologies on screwing up in my previous post :)...

b) By puttin

1:13 PM  

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