Hai pf, I had a doubt? we were well known about blackholes still it act as a mysterious one. Well my question is about collision of two black holes. what happens if a highmass of blackhole colloide with lowmass of blackhole? Is the highmass blackhole will suck the low mass black hole? Or else they two combine to form a massive one?If the gravitation is more for both what will happen?what may be the resultant? Is there any possibility to measure the force excerted in the blackhole?