To be free, one of 100 blue-eyed imprisoned logicians had to correctly tell own eye color. But none can see own eye color and stayed till a visitor came.
Challenge yourself with the Knight Knave and Spy logic puzzle. How many ways can you solve this liar, truth-teller, and the random-answerer puzzle?
The 7 squares matchstick puzzle: Move 2 matches to make 7 squares in the puzzle figure. Time 10 mins. Apply reasoning based on matchstick puzzle concepts.
Move 2 matches to form 5 matchstick shapes of squares, triangles or rhombuses. How many such new figures can you make? Total recommended time 10 minutes.
Move 1 stick to make 4 matchstick shapes of triangles, squares or rhombuses. How many such new figures can you make? Recommended time 10 minutes.
How to make 4 triangles with 6 sticks! Add 3 matches to the single matchstick triangle and make 4 triangles with 6 sticks. Time to solve 5 minutes. Can you?
Solve 10 difficult geometry questions for SSC CGL in 15 minutes in Set 95. Verify correctness from answers and learn to solve quickly from solutions.
In this matchstick triangle puzzle you have to remove 2 matchsticks to reduce number of triangles from 8 to 6. How many ways can you do it? Time 30 mins.
Move 3 matches to make 2 squares in matchstick puzzle figure. How many solutions can you find? Time to solve 5 minutes. It is a fun puzzle. Give it a try.
Move 3 matches to make 2 squares in 1st matchstick puzzle of this type. How many solutions can you find? Time limit 5 minutes. Give it a try. It'll be fun.
