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.

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Can you find out which options fits best with the missing column?

What is the centre of gravity?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

What Time Should the last watch show in the below figure?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?