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

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

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

John is the son of Jacob.
So,
Jacob is the_____of John's father?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

What does this below rebus puzzle mean?

I am the fastest animal but cannot climb the tree. What am I?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

Count the number of balls in picture below:

What does below rebus means ?