If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

What's a single-digit number with no value?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Find the last number in the series below:

voN luJ yaM raM ---

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

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A blonde put eyeliner on her head. Why?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?