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# Best references/tutorials for Probability/Combinatorics and Co-ordinat

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Intern
Joined: 19 Jun 2013
Posts: 7
Best references/tutorials for Probability/Combinatorics and Co-ordinat [#permalink]

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19 Jun 2015, 04:47
Probability/Combinatorics and Co-ordinate Geometry are two topics I struggle with most. Any references, or books that could help me with these?

Thank you
KZ
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Joined: 02 Sep 2009
Posts: 39753
Re: Best references/tutorials for Probability/Combinatorics and Co-ordinat [#permalink]

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19 Jun 2015, 04:53
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kzaveri19 wrote:
Probability/Combinatorics and Co-ordinate Geometry are two topics I struggle with most. Any references, or books that could help me with these?

Thank you
KZ

Theory on Combinations: math-combinatorics-87345.html

DS questions on Combinations: search.php?search_id=tag&tag_id=31
PS questions on Combinations: search.php?search_id=tag&tag_id=52

Tough and tricky questions on Combinations: hardest-area-questions-probability-and-combinations-101361.html

Theory on probability problems: math-probability-87244.html

All DS probability problems to practice: search.php?search_id=tag&tag_id=33
All PS probability problems to practice: search.php?search_id=tag&tag_id=54

Tough probability questions: hardest-area-questions-probability-and-combinations-101361.html

Theory on Coordinate Geometry: math-coordinate-geometry-87652.html

All DS Coordinate Geometry Problems to practice: search.php?search_id=tag&tag_id=41
All PS Coordinate Geometry Problems to practice: search.php?search_id=tag&tag_id=62

Also, check articles on these topics in our Important Topics Directory.

Hope it helps.
_________________
Intern
Joined: 19 Jun 2013
Posts: 7
Re: Best references/tutorials for Probability/Combinatorics and Co-ordinat [#permalink]

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19 Jun 2015, 05:07
definitely helps a lot Bunuel .. I have gone through those and the GMATClub Quant book. I need something that starts at a more basic level and then builds on that.

Thank you so much !
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Re: Best references/tutorials for Probability/Combinatorics and Co-ordinat [#permalink]

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19 Jun 2015, 17:44
Hi kzaveri19,

Probability and combinatorics are 2 categories that many Test Takers have trouble with, so you're not alone. The good news is that neither of those categories will appear all that often on Test Day, so they're not worth too much effort just yet IF you're not already great at all of the BIG categories (Algebra, Formulas, Data Sufficiency, Arithmetic, Ratios, Geometry, etc.).

How have you been scoring on your practice CATs (including the Quant and Verbal Scaled Scores)?

It could be that what you need to work on right now is NOT what you're currently asking about.

GMAT assassins aren't born, they're made,
Rich
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# Special Offer: Save $75 + GMAT Club Tests 60-point improvement guarantee www.empowergmat.com/ ***********************Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*********************** EMPOWERgmat Instructor Status: GMAT Assassin/Co-Founder Affiliations: EMPOWERgmat Joined: 19 Dec 2014 Posts: 9292 Location: United States (CA) GMAT 1: 800 Q51 V49 GRE 1: 340 Q170 V170 Re: Best references/tutorials for Probability/Combinatorics and Co-ordinat [#permalink] ### Show Tags 20 Jun 2015, 14:18 Hi kzaveri19, While I didn't address your concern about Co-ordinate Geometry, you should know that it's just as rare of a category on Test Day as probability and combinatorics are - you'll likely see just 1-2 co-ordinate Geometry questions on the Official GMAT. The good news is that most "graphing" questions are based on a handful of standard rules (graphing points and lines, understanding slope and knowing a few technical ideas - parallel/perpendicular lines, etc.), so they're often 'gettable' questions. GMAT assassins aren't born, they're made, Rich _________________ 760+: Learn What GMAT Assassins Do to Score at the Highest Levels Contact Rich at: Rich.C@empowergmat.com # Rich Cohen Co-Founder & GMAT Assassin # Special Offer: Save$75 + GMAT Club Tests

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Re: Best references/tutorials for Probability/Combinatorics and Co-ordinat [#permalink]

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04 Apr 2017, 19:27
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Re: Best references/tutorials for Probability/Combinatorics and Co-ordinat   [#permalink] 04 Apr 2017, 19:27
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