The number of letters is down to an estimated 200,000, from 280,000 last year.

Before 1839 the number of letters sent was 76 million.

Factors such as the number of letters different, and word length are often involved.

You may find yourself writing a large number of similar letters on a regular basis.

He also wrote a large number of letters and poems.

The two words are different, even to the number of letters.

She found a number of letters over the next three hours.

An unusually large number of letters were received in response.

The article drew a number of letters to the editor, including these.

For example, I have had a number of letters from prisoners.