you mean this one 109 8) ....
Count the "F's" that are in the following text:
FINISHED FILES ARE THE RE
SULT OF YEARS OF SCIENTI
FIC STUDY COMBINED WITH
THE EXPERIENCE OF YEARS.
How many "F's" did you find?
Wrong. There are 6 F's in the text above. Read and try again.
How is this possible? Your brain isn't capable of processing the word OF. Everyone that finds the six F's at once is a genius. Three is normal, four is very rare.