The phrase "attempts a number" is correct and usable in written English.
It can be used when discussing efforts to try various options or solutions in a particular context.
Example: "The researcher attempts a number of different methods to solve the problem."
Alternatives: "tries several options" or "makes several attempts".
He attempts a number of refutations, including one that arguably foreshadows Darwin's theory, and makes the point that if God resembles a human designer, then assuming divine characteristics such as omnipotence and omniscience is not justified.
As an analytical framework, the paper uses a global CGE model and attempts a number of simulations by calibrating various trade integration scenarios, such as tariff reduction and input-augmenting technological change.
DC Thomson has attempted a number of revamps of the Dandy magazine over the last five years in a bid to revitalise sales.
Nevertheless, we have attempted a number of different tests and we consider our results valid when most tests agree (Supplementary Tables 3 to 6).
It claimed that the Islamic State of Iraq, an umbrella group of militants, would "attempt a number of attacks to destabilize the security situation in the province".
At last night's Golden Globe Awards Hollywood actresses attempted a number of fashion's best-loved trends (some with terrific success, others without).
Between 1997 and 2010, Labour attempted a number of reforms to the economy which tried to alter the way companies and corporations behaved with a limited degree of success.
Contador attempted a number of breakaways over the arduous 20-kilometre final climb but it was his fellow Spaniard who got away at the end to extend his overall lead by six seconds.
Today, Mr. Daschle said: "I did think it's unfortunate that on so many occasions during the Clinton administration, Republicans were extraordinarily critical and damaging to the President's efforts when he attempted a number of foreign policy initiatives.
Since a fire engulfed the Deepwater horizon rig in the Gulf of Mexico on April 20, engineers have attempted a number of techniques to slow or stop the torrent of oil leaking from the wellhead 5,000 feet below the surface.
The streets of Lewisham had been given over to riot - mostly by people from outside the borough - and for an area which has attempted a number of radical responses to the race question the events of Saturday were heart-breaking.
