Question

It is probable that Ramu has forgotten to do his project.Begin :In

Answer 1

In all probability Ramu has forgotten to complete his project.

Answer 2

The sentence beginning with "in"-

In all probability, Ramu has forgotten to do his project.

In all probability is a phrase which refers to high chances of occurrence of a particular event.

The sentence states that the person Ramu has certainly forgotten to do the project, which he should have completed by now.

Another example of a way to use the phrase is -

We knew that we were in all probability going to watch the movie.