op 4 Published 9 years ago • 4.3K plays • Length 0:56 Download video MP4 Download video MP3 Similar videos 2:31 lasmatematicas.es 17:45 the riddle that seems impossible even if you know the answer 6:15 just a normal bike math: 0.5 х 2 = 1 wheel 23:29 how imaginary numbers were invented