Who is that with a neck and no head, two arms and no hands? What is it?

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

Can you solve this picture maths equation?

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.

Can you name four days which start with the letter 'T'?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

By moving just one matchstick, you need to make the below statement true. Can you do it?

how come the second man dies?

What has to be broken before you can use it?

Replace the question mark in the picture below.