Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

What has a ring but no finger?

Make a sentence consisting of three words that have the whole alphabet.

What does an Island and the letter T have in common?

Which five letter word can be added at the end of below word to form a
valid word?

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Find the next number in the sequence

5 12 24 36 ?

A devotee visits 9 temples when he visits India. All these nine temples have one thing in common - there are 100 steps in every temple. The devotee puts the Re.1 coin after climbing up every step. He does the same while climbing down every step. At each temple, the devotee offers half of his money from his pocket to god. In this way, his pocket becomes empty after he visits the 9th temple.

Can you calculate the total amount he had initially?