Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

What makes this number unique: 8,549,176,320?

What can go up a chimney down, but can’t go down a chimney up?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

The more it dries, the wetter it becomes. Can you tell what it is?

What can you deduce from the following BrainBat?

CRY
LMKI