Uploaded November 2013 | Updated September 2026, 2 weeks ago
This "How many F's" brain test / genius test uses music from: "Evening of Chaos" Kevin MacLeod (incompetech.com)
Facebook → facebook.com/dailybroccoli
Music licensed under Creative Commons: By Attribution 3.0
creativecommons.org/licenses/by/3.0
OMG I did not get this test right myself. That's why I wanted to share it with you as a brain test experiment. Are you a genius, or rather you would ask "Am I a genius?". Let's see how you perform. The test will ask you to count the F's in a particular text... then it will give you the answer. That's when you will most likely be shocked like me. Your brain is tested as to whether it can count fast letters that are subliminal. Here is the test in written form:
FINISHED FILES ARE THE RE-
SULT OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS.
Now count the F's in that sentence.
Count them ONLY ONCE!
Then see below...
ANSWER:
There are six F's in the sentence. :)
A person of average intelligence finds three of them.
If you spotted four, you're above average.
If you got five, you can turn your nose at most anybody.
If you caught six, you are a genius.
Here is the same text, but we highlighted the F's for your review!
To read more about experimental design check here: http://www.stat.yale.edu/Courses/1997-98/101/expdes.htm
or also here: en.wikipedia.org/wiki/Design_of_experiments
This "How many F's" brain test / genius test uses music from: "Evening of Chaos" Kevin MacLeod (incompetech.com)
Facebook → facebook.com/dailybroccoli
Music licensed under Creative Commons: By Attribution 3.0
creativecommons.org/licenses/by/3.0
OMG I did not get this test right myself. That's why I wanted to share it with you as a brain test experiment. Are you a genius, or rather you would ask "Am I a genius?". Let's see how you perform. The test will ask you to count the F's in a particular text... then it will give you the answer. That's when you will most likely be shocked like me. Your brain is tested as to whether it can count fast letters that are subliminal. Here is the test in written form:
FINISHED FILES ARE THE RE-
SULT OF YEARS OF SCIENTIF-
IC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS.
Now count the F's in that sentence.
Count them ONLY ONCE!
Then see below...
ANSWER:
There are six F's in the sentence. :)
A person of average intelligence finds three of them.
If you spotted four, you're above average.
If you got five, you can turn your nose at most anybody.
If you caught six, you are a genius.
Here is the same text, but we highlighted the F's for your review!
To read more about experimental design check here: http://www.stat.yale.edu/Courses/1997-98/101/expdes.htm
or also here: en.wikipedia.org/wiki/Design_of_experiments
