People make me, save me, change me, raise me. What am I?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

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

A man is approaching a broad and barren land. He has a package with him. If somehow, he is unable to open the package before reaching the land, he will die.

Can you guess what is present in the package?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.