(1) It's thirty cm long

(2) She could have been any age between thirty and fifty, and was not someone to mess with.

(3) More people were killed in political violence in those four years, than in the previous thirty .

(4) That's thirty of them

(5) Thirty litres of fuel

(6) We stood, awkwardly for a full thirty seconds, before he seemed to jolt back to life.

(7) However a university regulation prevented anyone below the age of thirty holding a chair.

(8) Thirty per cent

(9) It has rained and blown a gale continuously now for over thirty hours!

(10) I've got a long way to go before I'm thirty

(11) In year thirty

(12) Thirty of her school friends

(13) On checking my bank statement last Friday, I discovered that I had a mere thirty pence to last me until payday at the end of July!

(14) Thirty or forty years ago

(15) The thirty runners remaining

(16) About thirty or forty were injured, including more than a dozen elderly persons.

(17) Doing about thirty

(18) Thirty were hurt

(19) Typical notice periods are thirty , sixty and ninety days, although some are as short as seven days.

(20) The thirty is missing