Now I've written on this blotter what my real secret numbers are.

Although there is no secret number that would work for any network, there have been studies which show their experiment results.

Each of them set a secret number they had been given to memorize.

There are secret, silent numbers to be found in the most innocent words if you know how to decipher them.

A secret number to the unknown city where all missing persons go.

The doctor drew blood into test tubes and labeled them with my secret number.

He picked up the instrument and whispered a secret number.

He dialed the secret number he had been given weeks before.

On a sheet of paper, the players each write a 4-digit secret number.

The first one to reveal the other's secret number wins the game.