What is the word or phrase?

How do you go from 98 to 720 using just one letter?

Which is faster, Heat or Cold ? Explain.

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

What has hands, but can’t clap?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?