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

Replace the question mark with the correct number.

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Count the number of triangles in the given picture.

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

If your uncle’s sister is not your aunt, what relation is she to you?

Why do you find that most of the buildings are deprived of the 13th floor?

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.