Can someone help me out with this? I tried using the method explained in one of the videos of trying to find # of numbers in factorials.

Got the question from here: -

Can someone help me out with this? I tried using the method explained in one of the videos of trying to find # of numbers in factorials.

Got the question from here: -

This is not a “PowerPrep+” question - fixed title

Also see

In other words, expand the approach you took.