The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I know a nine-letter word having only one vowel.
Do you ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

People make me, save me, change me, raise me. What am I?

Different lights make me strange by changing me into different sizes. What am I?