A maths symbol is hidden in the below Bar Graph. Can you decipher it?

How can you tell a raw egg from a hard-boiled egg?

Why do people go to bed?

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

You see me once in June, twice in November, and not at all in May. What am I?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Find the missing letter in the last circle logically in the given below picture.

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

How can you take 2 from 5 and leave 4?