51.   A limited number of copies were printed.

52.   A limited number of these vouchers were issued each year.

53.   A major difference between adult and adolescent reasoning capabilities is the sheer number of schemata, or structures.

54.   A man has been reported for a number of alleged motoring offences.

55.   A Marked increase in the numbers of nobles had taken place since the early twelfth century.

56.   A meeting with the Planning Inspectorate considered increasing the number of architect inspectors.

57.   A member of the research team interviewed a number of pupils in two classes who had tackled the questions.

58.   A mutual fund is a portfolio of stocks or bonds that is jointly owned by a large number of investors.

59.   A natural language contains an infinite number of grammatical sentences.