The inverse operation is just the opposite operation, for example addition is the inverse of subtraction, and vice verso
The quantity subtracted.
covert observation Participant observation carried out without the explicit awareness and agreement of the social unit being studied.
multiply by 10
The word (difference) in the question is indicating that you need to subtract. In a math operation, when you see the words difference, how much more, or exceed these all mean you need to subtract.
The FBI was carrying out a covert operation in Columbia.
We are all going on a covert operation. There was covert opposition to the new leaders of the union.
A covert operation would be some sort of attack, that was executed in a way to conceal the identity of the aggressor. This is often referred to as Cove Ops or Covert ops by the Military.
Covert Action - 2002 Operation Rathole was released on: USA: March 2003
The covert operation cost $1 million dollars.Her covert anger came out in biting sarcasm.He tried to be covert when spying on his wife but he was caught.
The team has been selected toparticipate in a covert surveillance operation next week.
Coast Watch - 2010 A Covert Operation 1-1 was released on: USA: July 2010
Clandestine, or a "Black Op"
The Black Bag Operation is a covert entry into structures to obtain information for human intelligence operations. They are also referred to as Black Bag Jobs.
The Iran-Contra Affair
The Iran-Contra Affair
Divide feet by 5280 to get miles