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Difficulty: 800 – 2200

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	#	Name	Tags	Difficulty	Solved by
✓	gb_ch07_q016	Poisonous wine Green Book · Ch 7 · Algorithms and Numerical Methods	algorithms binary-encoding puzzle classic	1500	x0
✓	rb_ch01_q001	Two glass jugs (water and alcohol) Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle ratios classic	1000	x0
✓	rb_ch01_q002	Two bells ringing together Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle lcm	1100	x0
✓	rb_ch01_q004	Old style analogue clock falls off wall Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle partition classic	1100	x0
✓	rb_ch01_q005	Twelve marbles, one different Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle weighing classic	1300	x0
✓	rb_ch01_q006	Inscribed circle in square in corner Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	geometry circle puzzle	1400	x0
✓	rb_ch01_q007	Bug in cubic room Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	geometry 3d puzzle	1200	x0
✓	rb_ch01_q010	Apples by truck or by railway Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	optimization puzzle	1500	x0
✓	rb_ch01_q011	Hour and minute hand angle Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	geometry clock puzzle	1600	x0
✓	rb_ch01_q013	100 light bulbs and 100 stockbrokers Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	number-theory divisors puzzle	1500	x0
✓	rb_ch01_q015	Sock drawer pairs Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	pigeonhole puzzle	1400	x0
✓	rb_ch01_q017	Safe combination 40 brute force Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	combinatorics counting puzzle	1400	x0
✓	rb_ch01_q018	90 coins one unusual minimum weighings Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle weighing optimization	1800	x0
✓	rb_ch01_q020	10000 ants on ruler Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle physics-trick classic	1600	x0
✓	rb_ch01_q021	Lily pad doubling 30 days Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	exponential-growth puzzle	1500	x0
✓	rb_ch01_q022	27 lily pads in 6000 sq ft pond Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	exponential-growth puzzle	1600	x0
✓	rb_ch01_q024	Snail climbs 10-foot pole Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle trick-question	1800	x0
✓	rb_ch01_q025	Three identical light fixtures three switches Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle encoding classic	1600	x0
✓	rb_ch01_q026	Five hats three blue two red Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle logic-deduction classic	1500	x0
✓	rb_ch01_q028	Motorcyclists fly between them Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle trick-question	1500	x0
✓	rb_ch01_q030	Nine integers ABCDEFGHI constraint Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	constraint-satisfaction puzzle	1400	x0
✓	rb_ch01_q032	Boat rock pool water level Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	physics buoyancy puzzle	1400	x0
✓	rb_ch01_q039	Running away from dog in field Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle pursuit geometry	1400	x0
✓	rb_ch01_q043	Three children product 36 Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle logic-deduction classic	1600	x0
✓	rb_ch01_q044	Eight golf balls Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle weighing	1700	x0
✓	rb_ch01_q048	Chessboard dominoes corners removed Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle parity coloring classic	1700	x0
✓	rb_ch01_q051	String-like fuse 30 seconds with watch Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle fuse-burning	1600	x0
✓	rb_ch01_q052	Two string-like fuses 45 seconds Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle fuse-burning classic	1500	x0
✓	rb_ch01_q053	Walk one mile south east north end up at start Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	geometry puzzle spherical	1300	x0
✓	rb_ch01_q055	10 regions tax cheat scale Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle weighing encoding classic	1500	x0
✓	rb_ch01_q056	Seven gold bars two cuts Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle binary classic	1700	x0
✓	rb_ch01_q058	Mirror flip horizontal not vertical Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle physics philosophy	1600	x0
✓	rb_ch01_q059	Heterosexual intercourse without condoms Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	puzzle lateral-thinking	1500	x0
✓	rb_ch01_q062	Pizza two small versus one medium Red Book (Heard on the Street) · Ch 1 · Purely Quantitative & Logic Questions	geometry optimization puzzle	1600	x0
✓	rb_ch02_q044	Pizza derivatives lateral Red Book (Heard on the Street) · Ch 2 · Derivatives Questions	puzzle geometry lateral-thinking	1700	x0
✓	rb_ch04_q015	Two jars 100 marbles blindfolded Red Book (Heard on the Street) · Ch 4 · Statistics Questions	probability optimization puzzle	1200	x0

1	inderjeet230502	1218
2	kalash.kankaria	1205