Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What month of the year has 28 days?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

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

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

A father's child, a mother's child, yet no one's son.

Who am I?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?