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.

Which is the smallest number that you can write using all the vowels exactly once?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Can you decipher the below rebus?

PBLUESAISNUERSES

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

How many triangles are there on the puzzle below?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?