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

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

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Do You See It?

If eleven plus two equals one, what does nine plus five equal?

John was piloting a plane behind a car but was never able to overtake it. Why?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

What month of the year has 28 days?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?