What brings you down but never up?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Decipher

yyyy u r, yyyyy u b, i c u r y+y 4 ? by sharks. How would you survive?

People make me, save me, change me, raise me. What am I?

What is the next number in this series?

4,12,84,3612....

What can go up a chimney down, but can't go down a chimney up?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.