Question

A landfill sample was analyzed by dilution and plating techniques for viable bacterial count. When one gram of the landfill sample was diluted $1 \times 10^{-4}$ (w/v), it yielded 400 CFU. The viable bacterial count (in millions, rounded off to the nearest integer) in one gram of the landfill sample is ___.

Answer 1

The correct Answer is: 3 or 5 Approx.