For each one, first the puzzle is posed for you to solve within a recommended time. A detailed systematic solution then follows.
Matchstick puzzles, riddles, math puzzles, logic puzzles, river crossing puzzles, ball weighing puzzles are some of the categories.
The full list of all brain teasers with solutions is available in the link,
Challenging brain teasers with solutions: Long list.
This will always be the most up-to-date list with the brain teasers classified into categories that can be browsed separately.
Seven clues are given, each with a 4 digit code and hints on correct digits and their placements. Find the correct code from the clues to open the lock.
Given five clues, each with a 5 digit code and hints on correct digits and their placements, can you find the correct code from the clues to open the lock?
In this number lock puzzle with 5 clues including 682 in code, each clue describes position and correctness of 3 digits in its code. Can you crack the code?
Given three clues, each with a 3 digit code and hints on correct digits and their placements. Find the correct number lock code from the clues.
Number lock puzzle 9285: Can you crack the 4 digit number lock code from the five clues? Each 4 digit clue hints on correct digits and placements.
Twin birth statistics puzzle: In a year, 3% of births give rise to twins. What percentage of population is a twin: 3%, less than 3% or, more than 3%?
A customer ordered fifteen Zingers that are to be placed in packages of four, three or one. In how many ways can this order be fulfilled?
Find all two digit sets of two or more consecutive positive integers that can be added to obtain a sum of 100. Follow a systematic approach.
Analyze the one condition and four clues each a 4 digit code with hints on right digit and right place to find the 4 digit code to open the number lock.
A thrifty shop-owner made a collection of 10 rupee, 5 rupee and 2 rupee coins. One night the shop-owner had an idea of dividing his coins into...read on...
