I travel all around the world but always stay in the corner. What am I?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

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

Can you make a six-letter word using the letters N, A and B ?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

There are 3 apples in the basket and you take away 2. How many apples do you have now?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?