Fact Or Whack

We thought we would have some fun and share a series of Facts that you must determine if they are true or not. Although they sound fake, many of these are true. Can you decipher what is fact and what is whack?

1. From the time of its discovery to its declassification as a planet, Pluto never made a full rotation around the sun.
2. An Octopus has three hearts
3. You cannot hum while holding your nose shut
4. The dot over an "i" is called a "tittle"