The work requires sitting before the microphone for hours, saying strings of numbers.

No string of numbers is really random if it can be produced by a simple computer process.

Right now my girl friend Mabel wants me to give you a string of numbers.

Slowly he typed in the last string of numbers and hit Enter.

But a long string of numbers makes it difficult to see the underlying meaning.

"In most physics experiments the answer used to be just one number or a string of numbers," he said.

All we've got right now is meaningless strings of numbers.

She ran her finger under a string of letters and numbers on the card he held.

"We build on the ability to remember faces better than a string of letters and numbers."

He gave her a string of numbers, and she dutifully entered them.