How many Fs are in this paragraph?

trueself

FINISHED FILES ARE THE RE-

SULT OF YEARS OF SCIENTIF-

IC STUDY COMBINED WITH THE

EXPERIENCE OF YEARS.

trueself

不好玩啊 ？

6
actually it took me 2 readings to find them all

Cobra

简单啊，按Ctrl + F，然后键入F search就行了。

Cobra

不过，老实说，俺只数出来3个F，NND。

trueself

3# Cobra


啊？



【Did You Get it Right?
You probably counted 3 or 4, in fact there are 6 - go back and check again. Very few people find 6 first time around. Why?

The brain finds it difficult to process "OF"】


【There are six F's in the sentence.  One 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.  There is no catch.  Many people forget the OFs.  The
  human brain tends to see them as "V's" instead of "F's".】