How many sides does a circle have?

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

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

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

Can you write down eight eights so that they add up to one thousand?

Who always enjoys poor health?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

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