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.

If 1+9+8=1, what is 2+8+9?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Can you solve the photo plexer logic ?

Who is that with a neck and no head, two arms and no hands? What is it?

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you count the number of lines in the below picture?