What is so fragile that saying its name breaks it?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

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?

When is the top of a mountain similar to a savings account?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

Can you count the number of lines in the below picture?

Before Mount Everest was discovered, what was the highest mountain in the world?

How many triangles are there on the puzzle below?

Why do you find that most of the buildings are deprived of the 13th floor?

What is the below Rebus indicate?