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:

Re: What is the maximum number of pieces that a circular pie can [#permalink]
25 Feb 2012, 02:59

8

This post received KUDOS

Expert's post

2

This post was BOOKMARKED

marcodonzelli wrote:

What is the maximum number of pieces that a circular pie can be divided into by four linear cuts?

A. 6 B. 8 C. 9 D. 10 E. 11

Can someone show this to me with a picture?

Such kind of combinations problems are always about a pattern recognition.

Maximum pieces: 0 line gives 1 whole piece; 1 line will gives 2 pieces: 1+1=2; 2 lines will give 4 pieces: 2+2=4; 3 lines will give 7 pieces: 4+3=7; 4 lines will give 7+4=11 pieces.

Similarly: 5 lines will give 11+5=16 pieces; 6 lines will give 16+6=22 pieces; 7 lines will give 22+7=29 pieces.

So, generally kth line will add k new pieces.

Answer: E.

P.S. Though I agree, it doesn't seem to be GMAT type of question. _________________

1. 1st line can divide a circular pie by maximum 2 pieces 2. 2nd line gives us maximum 4 pieces 3. 3rd line can cross 3 pieces (to cross 4 piece is impossible) and we obtain 1+3*2=7 pieces 4. 4th line can cross maximum 4 pieces and we obtain 3+4*2=11

It can be solve less than 1min by means of the consecutive steps _________________

the key of this problem is the next line must be intersect all the previous line.so the answer is 2+2+3+4=11.Paint a chart is a directly and simply method. sorry ,my english is so poor and I can't clearly express my viewpoint.

If I see this in real gmat I'll never eat a cake again ...

hahahaha.. that's really funny. In my case, I'll be only focused on food after that point and not the quants. GMAT will be creaming me with such a question as my brain would immediately start thinking about food..

Re: What is the maximum number of pieces that a circular pie can [#permalink]
25 Feb 2012, 02:23

I personally don't like this question because it resembles too much of those brainteasers and I ended up with 14 pieces... 3 cuts would equal 7 pieces and then one linear straight slice horizontally would give me 14 pieces...

It’s been a long time, since I posted. A busy schedule at office and the GMAT preparation, fully tied up with all my free hours. Anyways, now I’m back...

Burritos. Great, engaging session about how to network properly. How better can it get? Hosted jointly by Human Capital Club and Engineers in Management, we had a chance to...