"With probability", "with a probability", "with the probability"?

Question

As a mathematician, I often write and read about probabilities. In the literature, I've seen versions of all the sentences below. Which one is correct?

This happens with probability (of) 30%.

This happens with the probability (of) 30%.

This happens with a probability (of) 30%.

In particular, what article should one use and is "of" correct/necessary?

Mozibur Ullah · Answer

I would say that:

This happens with probability 30%

Here adding 'of' would be ungrammatical. Whilst

This happens with a probability of 30%

Here the 'of' is necessary for the sentence to be gramatically correct.

"With probability", "with a probability", "with the probability"?

One Answer

Add your own answers!

Ask a Question