Can you solve ’10 pencil’ riddle in 10 seconds? Your ‘brain type’ may explain it

A VISUAL riddle could tell you if you’re left-brained or right-brained, and TikTokers will be scratching their heads for a simple yet elusive answer.

The solution to this tricky question might be easier for left-brained people.


It only takes one move to change the grouping order from descending to ascending Credits: TikTok

The video shows 10 pens arranged on a table in four groups.

The leftmost group has four pencils, then a group of three, a pair of two, and finally a lone pencil.

Each descending group is separated by a pencil width.

TikTok challenges the viewer to move just one pencil and reverse the order of the pencils so that the rightmost group has four pencils and the leftmost group has one.

Can you solve it before the 20 second time runs out?

To solve the puzzle, move the second pencil from the left to the empty space between the two pencils and the last pencil.

Now the number of pens in each group increases from one to four.

Finding the solution to a puzzle depends in part on your fluency in a thinking style called spatial reasoning.

Spatial reasoning means using the mind’s eye to think in three-dimensional space; It is a skill that can be learned and improved.

Children are often first taught spatial reasoning using a shape-sorting toy with corresponding pegs and holes.

People use spatial reasoning skills in everyday life when reading maps, assembling basic furniture or appliances, and during exercise or sports.

Last year, researchers at the Institute of Educational Sciences were awarded $1.6 million to investigate methods for teaching spatial reasoning skills to American children.

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“Spatial reasoning is critical to student achievement, particularly in early math skills,” they wrote.

“In later grades, it’s a persistence entry-level skill in engineering, chemistry, geoscience and other STEM fields.”

The Pew Research Center found that American students have “unimpressive” scores in math and science globally.

Elon Musk has expressed concern that teachers in the United States are not inspiring students to pursue engineering.

The solution to the TikTok puzzle


The solution to the TikTok puzzle Credits: TikTok

Categories: Optical Illusion

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