Find the value of "?" in the ball picture Riddle below:

In which direction should the missing arrow point?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

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

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Can you find a number that lies one third of the distance between 1/3 and 2/3?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

I can write cow in 13 letters.

Can You?