Which flower has two lips?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

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

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

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

If eleven plus two equals one, what does nine plus five equal?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.