What does this rebus means ?

PROG WORKRESS

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

What always comes into a house through the keyhole?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Forwards I am heavy, backward I am not. What am I?

There is something which you can be arrested for attempting but not for successfully completing.

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?