These types of puzzles are known as charades. What you have to do is to find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be the 'office'.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

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

I look at you, you look at me I raise my right, you raise your left. What am I?

Can you name some countries which do not have the alphabet 'A' in them?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

I am an odd number. Take away a letter and I become even. What number am I?

81 x 9 = 801. What must you do to make the this equation true?

I’m tall when I’m young, and I’m short when I’m old. What am I?