IQ Test :
Count The Number Of F’s .Take Your Time But Count Only Once
Please tell in comments section , how many you found in 1st attempt.Don’t Lie !!! 🙂 🙂
For some reasons, human brain is not able to count the “f” in “of”, maybe because the it sounds similar to “ov”, or because during (quick and fast ) reading the brain focuses not so much on “grammatical” words.