A few sentences

[nyggus]

Hi there:

Are the following sentences correct?

1. "The optimization method has to be chosen from among various available methods ."
2. "It may happen that one or both of the requirements are not fulfilled."
3. "We investigate whether it is an efficient method or not."

Thanks,
Nyggus

[MrPedantic]

Hello Nyggus

They look fine to me!

MrP