A photograph occupies 10 MB of storage. A memory stick with 4 GB capacity can store approximately how many such photographs?

A 4 GB stick holds about 4000 MB, so dividing by 10 MB per photo gives roughly 400 photographs.

A value near 300 undercounts the available capacity for 10 MB files.

A value near 500 overstates how many 10 MB files fit in 4 GB.

A value near 450 also exceeds the realistic count for this size.

Using 1 GB as 1000 MB, 4 GB divided by 10 MB lands on 400.

Actual usable capacity is a little less because the file system reserves some space.