Two players flip three fair coins each.
What is the probability that they get the same number of heads?
Solution to the Problem:
Here is the solution:The probability is 5/16.
The probability of getting three heads by both players is (1/8)2.
The probability of getting two heads by both players is (3/8)2.
The probability of getting one head by both players is (3/8)2.
The probability of getting no heads by both players is (1/8)2.
These probabilities add up to 20/64 or 5/16.
Correctly solved by:
| 1. Dr. Hari Kishan |
D.N. College, Meerut, Uttar Pradesh, India |
| 2. Kamal Lohia | Hisar, Haryana, India |
| 3. Davit Banana | Istanbul, Turkey |
| 4. Colin (Yowie) Bowey | Beechworth, Victoria, Australia |
| 5. Mrs. Painter's Honors Precalculus Class |
Broome High School, Spartanburg, South Carolina, USA |