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A self-referential phrase

Does this phrase have? vowels. What number (expressed in letters) must be put in place of the question in order for the phrase to be true? Self-referential phrases are those that speak of themselves. You can see some examples on Wikipedia. Solution This phrase has twelve vowels
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The cerebral cortex: morphology, histology and functional location

The cerebral cortex is the outermost layer of the brain. It is composed of a thin sheet of neurons with their interconnections and forms a layer a few millimeters thick that covers the irregular surface of the cerebral hemispheres. The cortex is the most developed part of the human brain and is responsible for thinking, perceiving, producing and understanding language.
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The art contest

Nononeanos are not negative by nature, it is only their way of expressing themselves, using negative phrases. An art competition resulted in and rewarded the four best artists in painting, hologram, laser engraving and sculpture. In the end, the presenter explains the results: A, who is not in the first place, has not participated with a hologram.
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The Kaprekar operation

There is a curious mathematical operation called Kaprekar Operation that is somewhat unique. It consists in rearranging the digits of a number so that the largest and smallest possible number is obtained, then subtracting the smallest from the largest. This operation can be applied to numbers of any size and can be repeated over and over again on the result obtained.
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Two characteristics of the psychopath: tolerance to stress and tendency to boredom

The study of people with psychopathy has not stopped evolving during the last centuries. And it is that in addition to the most known features of the psychopath such as lack of empathy, there are other very surprising features. We'll tell you then. Content 1 Characteristics of a psychopath 2 Tolerance to stress 3 Tendency to boredom Characteristics of a psychopath First, it is necessary to know some of the basic characteristics of a psychopath to understand why this type of traits is defining his personality.
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The shadow of the plane

Today the shadow of a plane that was about to land has passed over me. Coincidentally, later I took that same plane and I could see its shadow at high altitude. Which one was older? , The shadow of the plane near the ground or the shadow of the plane at high altitude? Solution Both will be approximately the same size.
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