1. A surprising number of systems have neither of these. 2. But among those students a considerable number have great difficulty with the university course. 3. Can a negative number have a square root? 4. French telephone numbers have six digits. 5. Number three has a quite different style of roundel and, to me it looks as if the tail stripe colours are reversed! 6. A growing number of households have at least one computer. 7. In some areas it was reported that large numbers of troops had ben deployed to restore order. 8. A number of factors have to be considered when determining the overall efficiency of a process and expected yield is only one of them. 9. In pursuing a solution to the energy problem, a number of factors have to be taken into consideration. |