Probability, RC Details & MSR
A lot of students struggle with combinatorics and probability, so concentrate on building the fundamentals properly, so you don’t lose your way later.
Count the cases before you compute
Global Resources
Your daily launcherOne tap to any tool the plan uses. Bookmark this page, and Error Log & Analytics next to it, for your daily habits.
Daily practice
Questions
Quiz 5 free/day
Timed sets with analytics. Weeks link exact presets. Unlimited with a subscription or with rewards points.
Question Banks FreeEvery question, tagged by topic and difficulty.
Quiz gives every member 5 free questions a day. Beyond that you need a subscription from $19.99/mo or 49 rewards points, which you earn just by doing timed practice here. Question Banks are free with no daily limit.
Tests & mocks
Weeks 3 · 6 · 9 · 11
GMAT Prep Mocks 2 free + 4 paid
The official exams. Scheduled at weeks 3, 6, 9, 11.
GMAT Club Tests 1 free testHarder-than-real quant & DI. Best in weeks 7-12.
Your first full GMAT Club Test is free. After that they come with a subscription, with rewards points, or free for everyone on public holidays. The GMAT Prep mocks above are separate and come from mba.com.
Earn as you learn
Auto-tracked · redeem anytimeTimed questions you record on GMAT Club count toward these: forum practice and preset quizzes. GMAT Club Tests practice does not count. Reach a milestone and the reward unlocks automatically.
Counted automatically from your GMAT Club timer history. Questions need a submitted answer and a real attempt to count. Prefer the long game? 49 rewards points still buys the full Quiz subscription.
Community
Study together
GMAT Club on YouTube Free
Lessons and live sessions; many are linked inside the weeks. New lectures drop regularly, so subscribe and YouTube notifies you.
Subscribe This week's discussion thread ForumPost your weekly update, ask about questions, and compare notes with everyone on the same week.
Suggestions & feedback Help us improveBroken link, better video, clearer wording? Post it and it ships in a weekly update, with credit.
Live chat rooms · pick one, not all of them
Study Buddy Chat
Find someone on your timeline. A partner two weeks ahead of you is worth more than three rooms you skim.
GMAT Questions ChatStuck on a specific question? Post it here rather than sitting on it for twenty minutes.
General GMAT chat ChatEverything else: timelines, score goals, what to do when a week goes badly.
GMAT Test Takers on WhatsApp FreeThe same conversations on your phone, if you would rather not keep a browser tab open.
Joining chat earns a rewards point every 3 days, so this counts toward unlocking the Quiz.
Study Plan chat group · pick yours by test date
Jan / FebTest window
Mar / AprTest window
May / JunTest window
Jul / AugTest window
Sep / OctTest window
Nov / DecTest window
Set your goal & test date in the sidebar and we highlight your group automatically. Each group lives on GMAT Club Chat and WhatsApp; they mirror each other.
Recommended books
Print or eBook
GMAT Official Guide Bundle Official
All 4 guides: main OG plus Quant, Verbal & Data Insights Reviews. Real retired questions with a 12-month online question bank.
Print bundle · Amazon eBook · mba.com
All the Quant + DI Amazon
Manhattan Prep. The quant & DI backbone, weeks 1-8.
All the Verbal Amazon
Manhattan Prep. CR and RC chapters throughout.
PowerScore CR Bible Amazon
The deep CR alternative. Pick this or All the Verbal.
Buy the Official Guide new, not used. Each copy ships with a single-use code for the online question bank, and used copies usually arrive with that code already redeemed. Manhattan and PowerScore books are fine to buy used.
My notes
All weeks, one place
Private to you, saved on this device with your progress. In the full version this becomes its own page, synced to your account.
Error Log & Analytics
Tracking system · every weekThe same tracking system runs across all 12 weeks: log every miss, review the pattern, redo it. Two tools, one daily habit.
Minimum fields to track
Use the built-in error log tracker above, the Analytics portal, or a customized Excel/Google Sheets spreadsheet, whichever you'll actually keep up with.
- Topic:
fractions, ratios, percent, CR conclusion, etc.
- Error type:
concept gap / setup error / calculation slip / rushed reading.
- Trigger:
what in the prompt pulled you off track.
- Fix:
one-sentence rule you will apply next time.
Redo rule
Redo rule: redo every missed question after a fixed frequency (recommended: after each week) without looking at the solution.
Analytics: what to check before wrap-up
- Accuracy by topic: which sub-skills are still under 80%.
- Timing by topic: where you're consistently over 2 min/question.
- The trend across your last few sessions, not just one bad day.
Week 7 Overview & Rules
Group RulesHow was your experience with Official Mock 2 last week?
Were you able to analyze your performance properly and get some clear data points on what to focus on next? That becomes really important now, because how you invest your time over the next few weeks will make a big difference.
Also hoping this time you were able to relate more to the test, the flow, the pressure, and what it takes to stay consistent throughout.
Moving on to this week.
Weekly time budget: 10 to 15 hours total
Week 7 rules (so the group stays aligned)
Spend a few extra seconds before solving to decide your approach
Don’t force a method if it’s not working, step back and rethink
Keep your steps clean, avoid over-complicating solutions
Use your mock takeaways actively during practice this week
Week 7: Combinations | Probability | Min–Max
Quant TrackThis is the part of Quant where formulas exist...
...but blindly using them is how you lose points.
Combinatorics can be solved in multiple ways.
Probability looks simple but can go wrong quickly if you rely on shortcuts.
Min–max questions seem straightforward until you miss a constraint.
A lot of students struggle with combinatorics and probability, so concentrate on building the fundamentals properly, so you don’t lose your way later.
What this week is really about
By the end of Week 7, you should be able to:
- Recognize when order matters and when it doesn’t
- Stop brute-forcing combinations that need structure
- Use complementary probability naturally
- Respect constraints in min–max problems instead of hand-waving them away
- Know when listing is safer than formulas
Core reads
Probability
Min-Max
Book reference (if you have it)
Manhattan GMAT Quant + DI Ch. 16 & Ch. 29 & Ch. 30
Read carefully: Chapter 16: Inequalities and Max Min; Chapter 29: Combinatorics; Chapter 30: Probability.
Find it on AmazonVideos
Click to watch inlineCombinatorics
Probability
Min-Max
Pick one main explainer per topic. Watching everything helps less than you think.
Practice Sets
Phase 1: Easy-mode practice80% accuracy on 20 questions or a streak of 15 correct
You have two ways to do this. Pick the one that fits how you usually study.
Forum = Click the links below, sort by Kudos and solve questions directly on the forum. Quiz = preset Forum Quiz (subscription or rewards points).
Goal is the same as Option A: 80% on 20 or a streak of 15 · Do small sets (15 questions). Review after each set.
Timing ramp for Phase 1
- Set 1: Untimed
(focus on setup and accuracy)
- Set 2: Soft-timed
(generous time, still process-focused)
- Set 3: Normal pacing
only after accuracy is stable
Common traps to actively watch for
- Using permutations when combinations are required
- Forgetting complementary probability exists
- Ignoring hidden constraints in min–max
- Over-calculating when elimination would work
The best solution here often looks boring. That’s a good sign.
What’s coming next week
Word Problems and Coordinate geometry
Reading Comprehension – Specific Questions
Verbal TrackThis week, RC shifts from "what is this passage about" to "what exactly does this line say".
Where wrong answers come from
Specific questions punish:
- Memory-based reading
- Vague impressions
- Answering from intuition instead of the text
What you should get out of this week
By the end of the week, you should be able to:
- You’ll go back to the passage more confidently
- You’ll stop answering from memory
- You’ll match answer choices to exact lines
- You’ll feel less rushed on detail-heavy questions
Core reads
Book Reading
Manhattan Prep – GMAT All the Verbal Ch. 14
Read carefully: Chapter 14: Specific Questions.
Find it on AmazonVideos
Click to watch inlineChoose whichever style clicks for you.
Practice Sets
Phase 1: Easy-mode practice80% accuracy on 3 sets or a streak of 3 sets
You have two ways to do this. Pick the one that fits how you usually study.
Forum = Click the links below, sort by Kudos and solve questions on the forum. Quiz = preset Forum Quiz (subscription or rewards points).
Goal is the same as Option A: 80% on 3 sets or a streak of 3 sets · Complete 3 sets and review after each set.
Timing ramp for Phase 1
- Set 1: Untimed
(focus on setup and accuracy)
- Set 2: Soft-timed
(generous time, still process-focused)
- Set 3: Normal pacing
only after accuracy is stable
Focus on
For each passage:
- Write one sentence on why the passage exists
- Ignore tempting detail-heavy answer choices
- Check if the answer matches the entire passage, not one paragraph
What’s coming next
Multi-Source Reasoning (MSR)
DI TrackMSR this week is about efficiency, not learning new mechanics. You already know how MSR works. Now you’re learning how not to waste time inside it.
Continue MSR sets from previous weeks
Practice Focus
- Continue MSR sets from previous weeks
- Read the question first, always
- Open only the tabs you need
- Track claims across sources instead of rereading everything
Core Reads
Read
Manhattan Prep: GMAT All the Quant + DI Ch. 18
Read carefully: Chapter 18: Multi-Source Reasoning.
Find it on AmazonVideos
Click to watch inlinePractice Sets
Phase 1: Easy-mode practice80% accuracy on 3 sets or a streak of 3 sets
You have two ways to do this. Pick the one that fits how you usually study.
Forum = Click the links below, sort by Kudos and solve questions directly on the forum. Quiz = preset Forum Quiz (subscription or rewards points).
Goal is the same as Option A: 80% on 3 sets or a streak of 3 sets · Do small sets (3 sets). Review after each set.
Timing ramp for Phase 1
- Set 1: Untimed
(focus on setup and accuracy)
- Set 2: Soft-timed
(generous time, still process-focused)
- Set 3: Normal pacing
only after accuracy is stable
What’s coming next week
Error Log & Group Discussion Guidelines
Error LogContinue the same structure from last week.
Post your stats, get a progress check
Need feedback, not sure whether you're ready to move on, or just stuck? Post these stats in your study group and a Moderator will give you an evaluation of your progress.
Reading sources & Time spent: Quant questions solved: Quant accuracy: combinations __% | probability __% | min-max __% Verbal questions solved: Verbal accuracy: rc __% DI questions solved: DI accuracy: msr __% One question link I want discussed (include your full attempt):