But these reported numbers are believed to be far below the actual cases.

Only a small number of people are believed to have known where they were.

The number is believed to be small, perhaps no more than a dozen.

The number has increased since then but is believed to be less than 75.

A number of options is believed to be on the table.

The number of French soldiers involved is believed to be around 500.

The total number of victims is believed to be between four and ten.

The number killed is believed to be in the hundreds.

The number of her calls was believed to predict how long a person had left to live.

The total number killed is believed to be much larger.