What does this below rebus puzzle mean?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

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

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Can you place six X (crosses) in below board without making three in a row in any way ?

Our product and our sum always give the same answer. Who are we?

What is the word or phrase?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

What word does this rebus represent?

meta meta
meta meta

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.