How many of the coin tosses must have resulted in heads?
16. When a coin is tossed in an experiment, the result is either a head or a tail. A head is given a point value of 2 and a tail is given a point value of -2. If the sum of the point values after 100 tosses is 20, how many of the tosses must have resulted in heads?
- 10
- 45
- 55
- 60
- 65