1. The problem statement, all variables and given/known data If you flip 1 quarter 100 times what are the odds all 100 flips would land heads? My friend argues that it would be a 50% chance since each individual flip has a 50% chance of being heads. 2. Relevant equations 3. The attempt at a solution I tried saying that its 50% chance per flip but it decreases by (0.50) ^ x each flip. x being the number of flips. Is there anyone out there who can help me explain this to him? His platform is that flipping 1 coin 100 times is different from flipping 100 coins 1 time. The probability of each should be the same though right?