Can you identify if it's a murder or a suicide ?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

What have one eye but still cannot see?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Remove two matchsticks to make the below equation correct.

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?