You have to do this test in maximum of 10 seconds, if not, the results are not valid.
Count the number of times that letter "F" appears in the following text:
+++++++++++++++++++++++++++
FINISHED FILES ARE THE RE-
SULT OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH THE
EXPERIENCE OF YEARS
+++++++++++++++++++++++++++
Done!
Don't go to the bottom of the screen if you are not done counting!
How many??
Three?
There are six! And it is not a joke. Scroll it up and count them again.
Here is the solution:
The brain is not able to "see"/observe "OF".
Whoever counted six letters "F" for the first time is a genius.
Four to five is very good and three is normal.
PErson who counted less than three should change their glasses.
Count the number of times that letter "F" appears in the following text:
+++++++++++++++++++++++++++
FINISHED FILES ARE THE RE-
SULT OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH THE
EXPERIENCE OF YEARS
+++++++++++++++++++++++++++
Done!
Don't go to the bottom of the screen if you are not done counting!
How many??
Three?
There are six! And it is not a joke. Scroll it up and count them again.
Here is the solution:
The brain is not able to "see"/observe "OF".
Whoever counted six letters "F" for the first time is a genius.
Four to five is very good and three is normal.
PErson who counted less than three should change their glasses.

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