Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Well, I am beginning to prepare for my GMATs and I have elected to brush up on my pathetic quanitative skills. I am working with "the official guide 10th edition" currently and have actually revived some long lost algebra skills, which i fear...Anyways, I was unable to revive the "functions" portion of my brain and I was hoping someone could point me in the direction of an online course specifically for functions. Math in general is very painful for me, so please find me something i'll be able to follow along easily.

I guess another question to ask is if functions are a major part of the quantitative section. Any thoughts?

Also, I suppose i'm in the same boat with "probabilities". Any info or help with either would be much appreciated.

There is no need to study functions, per se. There is, however, a category of strange problems called "defined functions". Typically, ETS will define a function using a strange symbol.

For example:

Suppose x##y = (x + y)/y. What is (4##5)##2?

The trick is to simply follow directions carefully and make sure you add the appropriate assumed parentheses.

The more difficult type of these problem are like this:

Suppose x##y = (x + y)/y. Is the ## operation associative? (i.e., is (a##b)##c = a##(b##c)?

Be careful. Sometimes they use the same variables in the implementation as the ones that they use in the definition of the problem. Remember, the variables in the DEFINITION of the functions are merely placeholders. To avoid confusion, simple change the variables in either the definition or the implementation of the defined function so that they are mutually unique.

Hope this helps. _________________

Best,

AkamaiBrah Former Senior Instructor, Manhattan GMAT and VeritasPrep Vice President, Midtown NYC Investment Bank, Structured Finance IT MFE, Haas School of Business, UC Berkeley, Class of 2005 MBA, Anderson School of Management, UCLA, Class of 1993

I appreciate the insight, but i have to say that i am not quite clear on your examples. It probably very easy, but I don't quite see the process. Can you elaborate a bit?

The test makes up phoney functions using arbitrary symbols, then asks you to evaluate them using real parameters. All you need to do to get these types of problems right is to carefully apply the "functions" EXACTLY as they define them.

Is this more clear? _________________

Best,

AkamaiBrah Former Senior Instructor, Manhattan GMAT and VeritasPrep Vice President, Midtown NYC Investment Bank, Structured Finance IT MFE, Haas School of Business, UC Berkeley, Class of 2005 MBA, Anderson School of Management, UCLA, Class of 1993

Yes. That is clear, but i am more of a visual learner. If it's not too much trouble can you write up a real problem that i can visually follow? If this is too much trouble, then dont worry about it. I don't want to be a burden and appreciate your input.

By the definition above, 1@3 = 1 + 2*3 = 7, and 4@7 = 4 + 2*7 = 18.

Hence, the answer is 18.

Pretty basic, huh? _________________

Best,

AkamaiBrah Former Senior Instructor, Manhattan GMAT and VeritasPrep Vice President, Midtown NYC Investment Bank, Structured Finance IT MFE, Haas School of Business, UC Berkeley, Class of 2005 MBA, Anderson School of Management, UCLA, Class of 1993

Hey everyone, today’s post focuses on the interview process. As I get ready for interviews at Kellogg and Tuck (and TheEngineerMBA ramps up for his HBS... ...

I got invited to interview at Sloan! The date is October 31st. So, with my Kellogg interview scheduled for this Wednesday morning, and my MIT Sloan interview scheduled...

Not all good communicators are leaders, but all leaders are good communicators. Communication is an essential tool that leaders need to use in order to get anything done. Almost...

Despite being a long weekend with Thanksgiving, this week was very tiring for me in various ways. Besides the pressure of learning materials I am not familiar with such...