Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).

Discover the list of 9 most famous mathematicians in history. Learn about Archimedes, Newton, and Gauss, whose ideas shaped ...

Sometimes you just want to relax and hear your music or movie’s audio without being encumbered by wearing headphones. That’s especially the case if you’re enjoying your media with friends or family.