What is so fragile that saying its name breaks it?

What is the next number in this series?

4,12,84,3612....

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Role Action
Block Prevents the target player from acting
Redirect Change target player target.
Save Protects the target player from death.
Seer Sees all actions that occurred
Murderer Kills the target player

The following five players are playing:

Andy
Brian
Chris
Daniel
Fred

You are Andy the Seer and you saw the following things:
a) Brian was redirected to Chris.
b) Chris was blocked.
c) Daniel was killed.

Who is the murderer then?

What can go through glass without breaking it?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

You see me once in June, twice in November, and not at all in May. What am I?