50

the cardinal number that is the product of ten and five ;

500

the cardinal number that is the product of one hundred and five ;

6

the cardinal number that is the sum of five and one ;

60

the cardinal number that is the product of ten and six ;

60 minutes

a period of time equal to 1/24th of a day; "the job will take more than an hour" ;

6 june 1944

day of the allied landing in France, World War II ;

7

the cardinal number that is the sum of six and one ;

70

the cardinal number that is the product of ten and seven ;

78

a shellac based phonograph record that played at 78 revolutions per minute ; the cardinal number that is the sum of seventy and eight ;

8

the cardinal number that is the sum of seven and one ;

80

the cardinal number that is the product of ten and eight ;

880 yards

a unit of length equal to half of 1 mile ;

8 may 1945

the date of Allied victory in Europe, World War II ;

8vo

the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves ;

9

the cardinal number that is the sum of eight and one ;

9-11

the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs ;

9/11

the day in 2001 when Arab suicide bombers hijacked United States airliners and used them as bombs ;

90

the cardinal number that is the product of ten and nine ;