Why Wine Glass Stem is so long?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

When it is alive we sing, when it is dead we clap our hands. What is it?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

Find out the number of circles in the given picture having Illusion

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?