Does warm water freeze faster than cool water? I just happened to stumble across a phrase that says so, is it true? Here is the source: <

Yes it does.

Answer taken from a link to a paper in the Wikipedia link provided.

> The Mpemba effect-warm water freezes faster than cool-was first described in this magazine ten years ago in an article entitled ‘Cool’ by E B Mpemba and D G Osborne (Phys. Educ. I969 4 172-5)

Link to paper

!Image taken from the paper

Image taken from the paper show a plot.