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Brain teasers/Brain twisters/Logic puzzles/Riddles/Hard Problems

Oddly Hard Math Problem
2:34
Oddly Hard Math Problem
Crazy Clock Puzzle (Problem #60)
2:25
Crazy Clock Puzzle (Problem #60)
Simple Problem (Problem #59)
2:29
Simple Problem (Problem #59)
VIRAL Brain Teaser (Problem #58)
2:03
VIRAL Brain Teaser (Problem #58)
3 Questions For IQ 180 (Problem #57)
3:37
3 Questions For IQ 180 (Problem #57)
Can You Solve This TRICKY Puzzle? A Sign Maker Puzzle!! (Problem #56)
2:24
Can You Solve This TRICKY Puzzle? A Sign Maker Puzzle!! (Problem #56)
HARDEST Matchstick Puzzle Ever (Problem #55)
3:31
HARDEST Matchstick Puzzle Ever (Problem #55)
Genius Puzzle that Only Geniuses Can Answer (Problem #54)
3:18
Genius Puzzle that Only Geniuses Can Answer (Problem #54)
100 Doors Puzzle for Smart People (Problem #53)
5:28
100 Doors Puzzle for Smart People (Problem #53)
5 Outside of the Box Puzzles for True Geniuses - Think Outside the Box!! (Problem #52)
7:58
5 Outside of the Box Puzzles for True Geniuses - Think Outside the Box!! (Problem #52)
9 Marbles and a Balance Scale Puzzle (Problem #51)
4:23
9 Marbles and a Balance Scale Puzzle (Problem #51)
HARD Fermat's Room Three Daughters Riddle (Problem #50)
4:39
HARD Fermat's Room Three Daughters Riddle (Problem #50)
TOUGH Pattern Finding Puzzle That Will Crack Your Brain (Problem #49)
4:39
TOUGH Pattern Finding Puzzle That Will Crack Your Brain (Problem #49)
Prisoner's Hat Riddle Puzzle - Can You Solve It? (Problem #48)
5:12
Prisoner's Hat Riddle Puzzle - Can You Solve It? (Problem #48)
DIFFICULT Puzzle That Only IQ 148 or Higher Can Solve (Problem #47)
4:23
DIFFICULT Puzzle That Only IQ 148 or Higher Can Solve (Problem #47)
VERY HARD Dice Puzzle That Most People Fail (Problem #46)
3:28
VERY HARD Dice Puzzle That Most People Fail (Problem #46)
TRICKY World Puzzle Championship Problem! Move 2 Matches to Make the Biggest Number (Problem #45)
3:07
TRICKY World Puzzle Championship Problem! Move 2 Matches to Make the Biggest Number (Problem #45)
Viral Google Interview Question Brain Teaser (Problem #44)
3:17
Viral Google Interview Question Brain Teaser (Problem #44)
Easy Math Riddle for Kids (Also for Adults!) (Problem #43)
2:52
Easy Math Riddle for Kids (Also for Adults!) (Problem #43)
Are Prime Numbers Infinite Or Finite? 2 Minute Simple Explanation Using Proof By Contradiction
2:01
Are Prime Numbers Infinite Or Finite? 2 Minute Simple Explanation Using Proof By Contradiction
SUPER HARD Math Puzzle Brain Teaser (Problem #41)
2:52
SUPER HARD Math Puzzle Brain Teaser (Problem #41)
90% of Kids Can Solve This, But A Math Major Cannot (Problem #40)
2:59
90% of Kids Can Solve This, But A Math Major Cannot (Problem #40)
Only A Genius Can Solve This - Can You Solve This Viral Cryptarithm Problem? (Problem#39)
4:36
Only A Genius Can Solve This - Can You Solve This Viral Cryptarithm Problem? (Problem#39)
TOUGH Numerical Counting Puzzle (Problem #38)
3:25
TOUGH Numerical Counting Puzzle (Problem #38)
Easy Puzzle Problem If You Have a Driver's License (Problem #37)
4:36
Easy Puzzle Problem If You Have a Driver's License (Problem #37)
TRICKY Numerical Sequence Problem (Hint : Fibonacci) (Problem #36)
4:38
TRICKY Numerical Sequence Problem (Hint : Fibonacci) (Problem #36)
HARD Numerical Sequence Puzzle That is Too Hard For Adults(Problem#35)
4:31
HARD Numerical Sequence Puzzle That is Too Hard For Adults(Problem#35)
Tricky Alphabet Sequence Problem (Problem#33)
4:31
Tricky Alphabet Sequence Problem (Problem#33)
Look-And-Say Sequence Puzzle! What letter comes next in the sequence? (Problem #34)
4:43
Look-And-Say Sequence Puzzle! What letter comes next in the sequence? (Problem #34)
What Letter Comes Next in O T T F F S S E N pattern? (Problem#32)
4:31
What Letter Comes Next in O T T F F S S E N pattern? (Problem#32)