What is in seasons, seconds, centuries and minutes but not in decades, years or days?

How is a fly different from a mosquito?

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

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

What has many teeth, but cannot bite?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?