Table 1 Examples of probability calculations for coin tosses, based on Pascal’s triangle
Number of coin tosses (equal to row numbers in Pascal’s triangle) | Possible outcomes (H, heads; T, tails) | Number of possible outcomes in Pascal’s triangle |
|---|---|---|
1 | H | 1 |
T | 1 | |
2 | HH | 1 |
HT, TH | 2 | |
TT | 1 | |
3 | HHH | 1 |
HHT, HTH, THH | 3 | |
HTT, THT, TTH | 3 | |
TTT | 1 | |
4 | HHHH | 1 |
HHHT, HHTH, HTHH, THHH | 4 | |
HHTT, HTHT, HTTH, THHT, THTH, TTHH | 6 | |
HTTT, THTT, TTHT, TTTH | 4 | |
TTTT | 1 |