Why do people go to bed?

What is the word or phrase?

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

Can you name an animal whose killing cannot be performed without spilling your own blood?

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

A man dies of old age on his 25 birthday. How is this possible?

Can you place three balls such that the equation shown in the picture holds true?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Mr. Buttons was all set to go to the village of Buttonland to meet his friend. So, he packed his bags and left for the village at 5 in the morning. Upon travelling on a road for miles, he came across a point where the road diverged into two. He was confused on which road to take. He gazed around and he saw two owls sitting on a branch. He thought he could ask for directions for the village from the two owls. So he went to the tree. There he saw a sign which read, "One owl always lies, and one is always truthful. They both fly away if you ask them more than 1 question."
Mr. Buttons was caught in the dilemma of what to ask? And from which owl to ask, since he only had one question. What should Mr. Buttons ask?

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