Can you place six X (crosses) in below board without making three in a row in any way ?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

How many triangles are there on the puzzle below?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

When does a USA Potato change its nationality?

Can you guess the name of the month by looking the below rebus ?

How can one talk without saying a single word?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

I can write cow in 13 letters.

Can You?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.