Seven Samurai of 2012

Question

SEVEN SAMURAI OF 2012

Collection of best Data Sufficiency questions and discussions of 2012

Absolute Values
1. if-x-is-not-equal-to-0-is-x-less-than-1-1-x-x-x-86140.html - 5 Kudos
2. is-x-1-1-x-1-2-x-1-2-x-82478.html - 4 Kudos
3. is-x-y-x-y-123108.html - 2 Kudos
4. if-x-is-different-from-0-is-x-126715.html - 1 Kudos
5. if-a-is-an-integer-and-a-b-b-is-a-127751.html - 1 Kudos
6. if-a-is-positive-what-is-the-value-of-b-128146.html - 1 Kudos
7. is-x-0-1-x-3-4x-3-2-x-3-2x-127978.html - 1 Kudos

Algebra and Arithmetic
1. is-x-m-m-2-n-2-k-2-xm-yn-zk-1-z-k-x-m-2-x-m-y-n-99423.html - 6 Kudos
2. how-many-integers-are-there-between-but-not-including-80333.html - 5 Kudos
3. if-x-2-y-5-y-z-2-and-z-2x-is-x-3-y-2-z-95789.html - 2 Kudos
4. shaina-s-five-distinct-digit-locker-code-is-5a48b-what-127335.html - 2 Kudos
5. what-is-the-three-digit-number-abc-given-that-a-b-and-c-126875.html - 1 Kudos
6. the-profit-from-the-sale-of-a-certain-appliance-increases-127877.html - 1 Kudos
7. if-a-b-and-c-are-positive-integers-is-b-between-a-and-c-126737.html - 1 Kudos

Coordinate Geometry
1. in-the-xy-plane-what-is-the-y-intercept-of-line-l-90901.html - 6 Kudos
2. if-ab-0-and-a-b-and-b-a-are-in-the-same-quadrant-is-126039.html - 5 Kudos
3. in-the-rectangular-coordinate-system-are-the-points-r-s-92823.html - 4 Kudos
4. in-the-rectangular-coordinate-system-shown-above-does-the-90635.html - 3 Kudos
5. in-the-xy-plane-does-the-line-with-equation-y-3x-100399.html - 2 Kudos
6. in-the-xy-coordinate-system-do-any-points-on-line-k-lie-in-127635.html - 2 Kudos
7. in-the-xy-plane-both-line-k-and-l-intersect-with-axis-y-is-94508.html - 1 Kudos

Geometry
1. in-the-figure-shown-what-is-the-value-of-x-125923.html - 6 Kudos
2. in-triangle-abc-what-is-the-length-of-side-bc-106669.html - 3 Kudos
3. in-the-picture-quadrilateral-abcd-is-a-parallelogram-and-127219.html - 3 Kudos
4. for-a-circle-with-center-point-p-cord-xy-is-the-127286.html - 2 Kudos
5. is-the-measure-of-one-of-the-interior-angles-of-quadrilateral-86156.html - 2 Kudos
6. given-that-abcd-is-a-rectangle-is-the-area-of-triangle-abe-127051.html - 1 Kudos
7. the-area-of-the-right-triangle-abc-is-4-times-greater-than-127070.html - 1 Kudos

Distance/Rate and Work/Rate problems
1. how-many-hours-did-it-take-dale-to-drive-124911.html - 2 Kudos
2. is-the-number-of-seconds-required-to-travel-d1-feet-at-r1-105140.html - 2 Kudos
3. bob-and-wendy-left-home-to-walk-together-to-a-restaurant-for-122995.html - 2 Kudos
4. if-two-copying-machines-work-simultaneously-at-their-126653.html
5. robots-x-y-and-z-each-assemble-components-at-their-107311.html
6. machines-x-and-y-work-at-their-respective-constant-rates-128011.html
7. what-is-the-distance-between-harry-s-home-and-his-office-122996.html

Divisibility/Multiples/Factors
1. if-a-and-b-are-positive-integers-divisible-by-6-is-6-the-100324.html - 5 Kudos
2. is-the-last-digit-of-integer-x-2-y-2-a-zero-1-x-y-is-95793.html - 4 Kudos
3. is-the-integer-n-odd-1-n-is-divisible-by-3-2-2n-is-91399.html - 4 Kudos
4. can-someone-walk-me-through-this-one-if-x-and-y-are-95872.html - 4 Kudos
5. how-many-different-prime-numbers-are-factors-of-the-positive-126744.html - 2 Kudos
6. the-positive-integers-x-y-and-z-are-such-that-x-is-a-85437.html - 2 Kudos
7. if-r-and-s-are-integers-is-r-s-divisible-by-127231.html - 1 Kudos

Exponents and Roots
1. what-is-the-value-of-the-integer-n-1-n-n-2-15-2-n-107149.html - 2 Kudos
2. is-x-7-y-2-z-3-0-1-yz-0-2-xz-127692.html - 2 Kudos
3. a-b-c-and-d-are-integers-abcd-126141.html - 1 Kudos
4. if-the-prime-factorization-of-the-integer-q-can-be-expressed-126689.html - 1 Kudos
5. if-x-y-and-z-are-positive-integers-where-x-y-and-z-x-126859.html - 1 Kudos
6. if-x-is-a-positive-integer-is-sqrt-x-an-integer-88994.html - 1 Kudos
7. is-5-k-less-than-1-000-1-5-k-128055.html - 1 Kudos

Statistics, Sequences and Functions
1. the-sequence-s1-s2-s3-sn-is-such-that-sn-1-n-103947.html - 3 Kudos
2. for-any-integers-x-and-y-min-x-y-and-max-x-y-denote-94998.html - 3
3. in-the-sequence-shown-a-n-a-n-1-k-where-2-n-15-and-k-is-a-nonzero-constant-126119.html - 1 Kudos
4. in-a-sequence-of-terms-in-which-each-term-is-three-times-the-109374.html - 1 Kudos
5. an-infi-nite-sequence-of-positive-integers-is-called-a-127496.html - 1 Kudos
6. if-s-is-the-infinite-sequence-s1-9-s2-99-s3-999-sk-10-k-127798.html - 1 Kudos
7. k-and-l-are-each-four-digit-positive-integers-with-thousands-126646.html

Fractions/Ratios/Decimals
1. is-the-hundredths-digit-of-the-decimal-d-greater-than-102268.html - 3 Kudos
2. does-the-decimal-equivalent-of-p-q-where-p-and-q-are-89566.html - 3 Kudos
3. on-a-certain-sight-seeing-tour-the-ratio-of-the-number-of-68645.html - 1 Kudos
4. if-d-represents-the-hundredths-digit-and-e-represents-the-116821.html - 1 Kudos
5. all-the-clients-that-company-x-had-at-the-beginning-of-last-128023.html - 1 Kudos
6. is-x-y-1-the-ratio-of-x-to-y-is-7-9-2-xy-127437.html - 1 Kudos
7. if-x-0-abcd-where-a-b-c-and-d-each-represent-a-nonzero-127399.html - 1 Kudos

Inequalities
1. if-20-swiss-francs-is-enough-to-buy-9-notebooks-and-89226.html -12 Kudos
2. if-x-is-not-equal-to-0-is-x-less-than-1-1-x-x-x-86140.html - 6 Kudos
3. if-x-y-z-0-is-z-1-1-z-x-y-1-2-x-y-108760.html - 5 Kudos
4. is-x-4-y-4-z-4-1-x-2-y-2-z-2-2-x-y-z-101358.html - 4 Kudos
5. if-w-x-0-is-w-y-0-1-x-y-0-2-y-x-105771.html - 3 Kudos
6. if-p-q-and-p-r-is-pqr-p-1-pq-0-2-pr-126285.html - 2 Kudos
7. is-x-y-2-1-x-y-5-2-x-2-y-97142.html - 2 Kudos

Number Properties
1. the-positive-integers-x-y-and-z-are-such-that-x-is-a-85437.html - 3 Kudos
2. if-m-is-an-integer-is-m-odd-1-m-2-is-not-an-even-integer-106646.html - 2 Kudos
3. if-m-p-and-t-are-positive-integers-and-m-p-t-is-the-product-mpt-an-even-integer-126259.html - 2 Kudos
4. does-the-integer-k-have-a-factor-p-such-that-1-p-k-126735.html - 2 Kudos
5. how-many-different-prime-numbers-are-factors-of-the-positive-126744.html - 2
6. series-of-n-consecutive-positive-integers-126032.html - 1 Kudos
7. is-x-the-square-of-an-integer-126385.html - 1 Kudos

Overlapping sets
1. how-many-people-are-directors-of-both-company-k-and-company-r-91581.html -3 Kudos
2. at-least-100-students-at-a-certain-high-school-study-japanes-92305.html - 2 Kudos
3. at-least-10-percent-of-the-people-in-country-x-who-are-122734.html - 1 Kudos
4. of-the-60-families-in-a-certain-neighborhood-38-have-a-cat-127091.html - 1 Kudos
5. in-jefferson-school-300-students-study-french-or-spanish-or-87885.html - 1 Kudos
6. a-town-t-has-40-000-residents-25-percent-of-whom-are-age-128196.html - 1 Kudos
7. in-garfield-school-250-students-participate-in-debate-or-128197.html - 1 Kudos

Remainders
1. is-x-2-y-2-divisible-by-5-1-when-x-y-is-divided-by-5-the-86839.html - 4 Kudos
2. what-is-the-value-of-length-n-100-meter-of-wire-126500.html - 1 Kudos
3. if-a-b-and-c-are-positive-integers-what-is-the-remainder-127028.html - 1 Kudos
4. integer-with-remainder-r-126393.html
5. if-n-is-a-positive-integer-and-r-is-the-remainder-when-n-126395.html
6. if-t-is-a-positive-integer-and-r-is-the-remainder-when-t-128031.html
7. if-a-and-b-are-positive-integers-what-is-the-remainder-when-128194.html

Statistics and sets
1. for-a-certain-exam-was-the-standard-deviation-of-the-scores-113409.html - 9 Kudos
2. beginning-in-january-of-last-year-carl-made-deposits-of-83691.html - 5 Kudos
3. a-certain-list-consists-of-several-different-integers-126040.html - 4 Kudos
4. on-jane-s-credit-card-account-the-average-daily-balance-for-106680.html - 4 Kudos
5. in-the-sequence-of-nonzero-numbers-t1-t2-t3-tn-tn-65701.html - 3 Kudos
6. is-the-product-of-all-of-the-elements-in-set-s-negative-126212.html - 2 Kudos
7. in-the-sequence-shown-a-n-a-n-1-k-where-2-n-15-and-k-is-a-nonzero-constant-126119.html - 1 Kudos

Word problems
1. laura-sells-encyclopaedias-and-her-monthly-income-has-two-64646.html - 6 Kudos
2. of-the-60-animals-on-a-certain-farm-2-3-are-either-cows-or-92062.html - 5 Kudos
3. each-employee-of-a-certain-task-force-is-either-a-manager-or-94413.html - 4 Kudos
4. on-jane-s-credit-card-account-the-average-daily-balance-for-106680.html - 3 Kudos
5. the-number-of-antelope-in-a-certain-herd-increases-every-99810.html -2 Kudos
6. the-profit-from-the-sale-of-a-certain-appliance-increases-127877.html - 2 Kudos
7. a-school-admin-will-assign-each-student-in-a-group-of-n-127509.html - 2 Kudos

Probability
1. a-box-contains-10-light-bulbs-fewer-than-half-of-which-are-58350.html - 7 Kudos
2. a-jar-contains-8-red-marbles-and-y-white-marbles-if-joan-101748.html - 7 Kudos
3. a-certain-jar-contains-only-b-black-marbles-w-white-marbles-104924.html - 5 Kudos
4. a-drawer-contains-8-socks-and-2-socks-are-selected-at-86757.html - 3 Kudos
5. a-committee-consists-of-n-women-and-k-men-in-addition-there-127620.html - 1 Kudos
6. a-drawer-contains-36-socks-and-2-socks-are-selected-at-85761.html - 1 Kudos
7. if-2-different-representatives-are-to-be-selected-at-random-128233.html

Some more good discussions

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https://gmatclub.com/forum/10-000-is-deposited-in-a-certain-account-that-pays-r-65464.html
last-year-the-first-30-000-of-each-country-x-resident-s-128110.html
a-total-of-60-000-was-invested-for-one-year-part-of-this-126655.html
if-the-operation-is-one-of-the-four-arithmetic-operations-93966.html
if-the-operation-is-one-of-the-four-arithmetic-operations-93966.html
john-and-fawn-each-drinking-at-a-constant-pace-can-finish-127741.html
on-a-certain-sight-seeing-tour-the-ratio-of-the-number-of-68645.html
if-two-copying-machines-work-simultaneously-at-their-126653.html
in-a-sequence-of-terms-in-which-each-term-is-three-times-the-109374.html
the-lifetime-of-all-the-batteries-produced-by-a-certain-comp-101472.html
an-infi-nite-sequence-of-positive-integers-is-called-a-127496.html
if-75-of-guest-at-a-certain-banquet-ordered-dessert-what-109889.html
w-x-y-and-z-are-integers-if-z-y-x-w-is-w-x-124036.html
is-n-divisible-by-127213.html
if-m-and-n-are-positive-integers-then-is-m-an-even-integer-127325.html
can-the-positive-integer-n-be-written-as-the-sum-of-two-126725.html
p-r-86165.html
if-a-b-is-a-b-b-a-84761.html
is-x-1-x-3-0-1-1-x-1-2-x-109078.html
is-m-z-0-1-m-3z-0-2-4z-m-0-c-106381.html
is-x-4-x-1-2-4-x-108286.html
on-the-number-line-the-distance-between-x-and-y-is-greater-127014.html
if-k-does-not-equal-0-1-or-1-is-1-k-0-1-1-k-119545.html
if-3-a-4-b-c-what-is-the-value-of-b-1-5-a-25-2-c-113040.html
what-is-the-value-of-a-2-b-104673.html
is-x-10-10-1-x-2-34-2-x-127881.html
if-positive-integer-x-is-a-multiple-of-6-and-positive-98662.html
if-k-m-and-t-are-positive-integers-and-k-6-m-4-t-127989.html
if-k-and-n-are-integers-is-n-divisible-by-128028.html
is-the-integer-z-divisible-by-128030.html
is-x-divisible-by-126857.html
in-the-diagram-what-is-the-length-of-ab-127098.html
length-of-ac-119652.html
og-ds-91-verbal-review-126441.html
if-b-is-the-midpoint-of-ac-what-is-the-length-of-be-127104.html
in-pqr-if-pq-x-qr-x-2-and-pr-y-which-of-the-110404.html
is-the-triangle-abc-right-angled-at-b-127327.html
if-the-length-of-side-ab-is-17-is-triangle-abc-a-right-tria-127069.html
in-the-figure-above-segment-rs-and-tu-represent-two-position-126441.html
if-polygon-x-has-fewer-than-9-sides-how-many-sides-does-127394.html
slopes-of-m-and-n-124025.html
at-how-many-points-does-line-l-intersect-with-the-parabola-126942.html
if-the-slopes-of-the-line-l1-and-l2-are-of-the-same-sign-is-126759.html
the-vertices-of-a-triangle-are-on-points-a-a-b-b-126758.html
in-the-xy-plane-is-the-slope-of-line-l-greater-than-the-126941.html
at-how-many-points-does-line-l-intersect-with-the-parabola-126942.html
in-the-xy-plane-point-r-s-lies-on-a-circle-with-center-15566.html
circle-c-and-line-k-lie-in-the-xy-plane-if-circle-c-is-101471.html
in-the-xy-coordinate-system-do-any-points-on-line-k-lie-in-127635.html
is-x-square-root-of-x-126060.html
is-root-x-a-prime-number-126573.html
ds-inequalities-126369.html
if-x-y-9-0-and-x-and-y-are-integers-is-x-126896.html
if-x-is-an-integer-what-is-the-value-of-x-126958.html
both-a-b-and-c-are-3-digits-integers-where-a-b-c-is-the-126570.html
if-the-units-digit-of-the-three-digit-positive-integer-k-is-85443.html
if-the-sum-of-the-digits-of-the-positive-two-digit-number-x-126871.html
if-a-wire-27-meters-long-is-cut-into-three-pieces-of-three-126906.html

Please share your personal best questions, posts, discussions of 2012

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Attachment:

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Bunuel · Accepted Answer

SETS OF QUESTIONS

TOPICS WITH QUESTION COLLECTIONS
1. Inequality and absolute value questions (13 DS questions with solutions): inequality-and-absolute-value-questions-from-my-collection-86939.html - 90 Kudos
2. Tough and tricky set of problems (10 PS questions with solutions): tough-tricky-set-of-problms-85211.html - 89 Kudos
3. DS tough and tricky exponents and roots questions (11 DS questions with solutions): tough-and-tricky-exponents-and-roots-questions-125956.html - 40 Kudos
4. 12 Easy Pieces (12 DS questions with solutions): 12-easy-pieces-or-not-126366.html - 21 Kudos
5. PS tough and tricky exponents and roots questions (11 PS questions with solutions): tough-and-tricky-exponents-and-roots-questions-125967.html - 18 Kudos
6. Set of 10 PS questions: new-set-of-good-ps-85440.html - 17 Kudos
7. The Discreet Charm of the DS (12 DS questions with solutions): the-discreet-charm-of-the-ds-126962.html - 12 Kudos

DOWNLOADS WITH QUESTION COLLECTIONS
1. 700+ GMAT Data Sufficiency Questions With Explanations (55 questions with solutions): 700-gmat-data-sufficiency-questions-with-explanations-100617.html - 5958 downloads, 107 Kudos
2. 50 tricky questions: 50-tricky-questions-92834.html - 5636 Downloads, 235 Kudos
3. Tough Problem Solving Questions With Solutions (50 questions with solutions): tough-problem-solving-questions-with-solutions-100858.html - 2769 downloads, 38 Kudos
4. Probability and Combinations Questions With Solutions (40 questions with solutions): hardest-area-questions-probability-and-combinations-101361.html - 1995 downloads, 26 Kudos
5. 700-800 PS and DS questions with solutions: quant-700-800-questions-ps-ds-with-solutions-123039.html - 1747 downloads, 66 Kudos
6. Collection of 2000 DS and PS Questions: 1001-ds-questions-file-106193.html - 968 downloads, 76 Kudos
7. Collection of DS and PS Percentage Questions: valuable-collection-of-percentage-questions-ps-ds-120101.html - 764 downloads, 218 Kudos

Bunuel · Answer

Collection of best Problem Solving questions and discussions of 2012

Show Spoiler

https://gmatclub.com/forum/if-each-term-in-the-sum-a1-a2-a3-an-is-either-7-or-93974.html - 2 Kudos
if-a-b-and-c-are-greater-than-0-and-a-is-twice-as-large-as-90197.html - 2 Kudos
two-objects-are-placed-on-opposite-corners-of-a-cube-the-58529.html - 7 Kudos
if-the-probability-that-stock-a-126201.html - 6 Kudos
standing-on-the-origin-of-an-xy-coordinate-plane-john-takes-127511.html - 5 Kudos
if-the-probability-of-rain-on-any-given-day-in-city-x-is-57957.html - 5 Kudos
bill-has-a-small-deck-of-12-playing-cards-made-up-of-only-2-suits-of-6-cards-each-96078.html - 5 Kudos
divisible-by-12-probability-121561.html - 3 Kudos
a-certain-class-consists-of-8-students-including-kim-127730.html - 3 Kudos
a-box-contains-three-pairs-of-blue-gloves-and-two-pairs-of-127699.html - 2 Kudos
an-investment-of-d-dollars-at-k-percent-simple-annual-106083.html - 2 Kudos
a-group-of-n-students-can-be-divided-into-equal-groups-of-126384.html
when-the-integer-x-is-divided-by-the-integer-y-126304.html
when-the-positive-integer-x-is-divided-by-11-the-quotient-126357.html
in-the-figure-each-side-of-square-abcd-has-length-1-the-54152.html - 2 Kudos
in-the-figure-point-d-divides-side-bc-of-triangle-abc-into-126934.html - 2 Kudos
what-is-the-ratio-of-the-surface-area-of-a-cube-to-the-127459.html - 2 Kudos
the-line-represented-by-the-equation-y-4-2x-is-the-127770.html - 1 Kudos
if-4-people-are-selected-from-a-group-of-6-married-couples-99055.html - 4 Kudos
a-committee-of-6-is-chosen-from-8-men-and-5-women-so-as-to-104859.html - 4 Kudos
difficult-quant-question-126208.html - 3 Kudos
how-many-numbers-between-0-and-1670-have-a-prime-tens-digit-127319.html - 3 Kudos
4-professors-and-6-students-are-being-considered-for-85865.html - 3 Kudos

Bunuel · Answer

THEORY    
  Topics on Theory    #     Name     Kudos      1    NUMBER THEORY   100     2   DISTANCE/RATE/TIME   67     3   COORDINATE GEOMETRY   60     4   TRIANGLES   52     5   POLYGONS   49     6   ABSOLUTE VALUE    31     7   PROBABILITY    31

budablasta · Answer

Awesome! Thank you so much Bunuel! This stuff is seriously must-do! +1

Yekrut · Answer

Oh my what a great resource! Bookmarked this for future reference. Thank you!

pratikbais · Answer

I am sure this will help my conquest of 700+ Bunuel.

Genius stuff... Can't thank enough.. +1

kp2014 · Answer

Wow!!!can we ever have enough words to thank u!!!

dddmba2012 · Answer

Great Collection !

gmatfighter12 · Answer

Another great post. Thank you.

Bunuel · Answer

New post is added: Theory seven-samurai-of-128316.html#p1051303

Bunuel · Answer

Final part is added! Collection of best Problem Solving questions and discussions of 2012 : seven-samurai-of-128316.html#p1051302

carcass · Answer

This is great and tough at the same time

) Thanks for your work.

LalaB · Answer

My God, Bunuel, what are u doing?

u know, that u r a special one ?

u cant imagine how helpful u r

budablasta · Answer

Hi Bunuel, What is the general level of these Seven Samurai questions. Are they scattered across 700-800 or are they concentrated within a smaller range. I find most quite challenging.

Bunuel · Answer

The questions are of different level, but mainly 650-750.

aazhar · Answer

Are some of these questions from Manhatan GMAT and GMATPrep?

I am wondering if i should do these or not because they might appear in my practice CATs and kind of give me an advantage?

Bunuel · Answer

There are several questions from MGMAT and GMATPrep but usually they are tagged accordingly (with "Source: Manhattan GMAT" and "Source: GMATPrep" tags), so you can skip them when working on this set.

priyank24 · Answer

Dam dude.. Nothin but respect for everythin you do.. Been on the forums since only a week and have realised that your posts are the ones I need to follow to kill it in quant.. Seriously man.. Respect!!

Posted from my mobile device

Posted from my mobile device

mohnish104 · Answer

800 KUDOS TO YOU BUNUEL!!!!

Seven Samurai of 2012

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My Rewards

Topics on Theory
#	Name	Kudos
1	NUMBER THEORY	100
2	DISTANCE/RATE/TIME	67
3	COORDINATE GEOMETRY	60
4	TRIANGLES	52
5	POLYGONS	49
6	ABSOLUTE VALUE	31
7	PROBABILITY	31