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.
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Analytical reasoning based approach
12 balls weigh 3 times to find the one fake. All 12 balls look same and you have a pan balance with no weights. Time to solve the 12 balls puzzle 40 mins.
9 balls 1 different weight puzzle: Find the fake ball in 3 weighs. All balls look alike. You are given a pan balance with no weights. Time to solve 30 mins.
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?
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.
In this second 8 balls weight puzzle, find the fake ball in 3 weighs. All 8 balls look alike and you are given a pan balance without any weights.
In this first 8 balls weight puzzle, find the single heavier ball in 2 weighs. All 8 balls look identical and you are given a mechanical balance with no weights.
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.