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 |