Count the squares in the matchstick puzzle below?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?