The phrase "a number of pledges" is correct and usable in written English.
It can be used when referring to multiple commitments or promises made by individuals or groups.
Example: "The organization received a number of pledges from community members to support the fundraising event."
Alternatives: "several pledges" or "multiple pledges".
The Democrats failed to deliver on a number of pledges, from eliminating highway tolls to finding enough savings from cutting waste to finance new subsidies like cash allowances for families with children.
It is quite a challenge for any leader, and I suspect particularly the leader of an opposition party, if a party has been in opposition for a long time, to say to folk, 'Look, there are a number of pledges that we've had that there were very close to our heart for a long time that we've had to drop altogether'.
When he was sworn in, Mr Kenyatta made a number of pledges - and he said three of those would be fulfilled within a hundred days.
But, following a number of pledges of money from small businesses and individuals, Mrs DeSouza said the target had not been reached.
Under the deal, the drinks industry would be asked to sign up to a number of alcohol pledges.
Turnbull announced a number of election pledges in the final stage of the campaign, with the major commitment around mental health.
Ahmed Shaheed, the UN special rapporteur in charge of investigating rights abuses in Iran, said: "Rouhani made a number of election pledges which included ending the sanctions regime, but also a number of human rights promises.
In a speech that reiterated a number of the pledges made in the Conservative party's green paper last year, the international development secretary, Andrew Mitchell, today promised a "fundamental change" of approach to how aid is delivered and monitored.
The full details of the responsibility deal have yet to be unveiled, with an announcement expected this week, but under it, the drinks industry would be expected to sign up to a number of alcohol pledges.
"I think that taxpayers have legitimate expectations that they will be paid back for what was used in the bailouts, and the financial transactions tax can provide for this," Algirdas Semeta, the European commissioner for taxation, said Tuesday after a monthly meeting of European Union finance ministers, where a number of nations pledged their support.
But a number of nations pledged new funding for research on small cetaceans, some of which are severely threatened.
