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# OGT Permutations Com

### OGT Permutations and Combinations calculator 18 cards 3 slides (try targets)

Question | Answer |
---|---|

Order does not matter in ____ | Combination |

If the order matters it is a ___ | Permutation |

On the OGT Calculator, Permutations and Combinations are found by using the ___ button | PRB |

True or false, the formula for permutations and combinations is found on the OGT reference sheet | True |

True or false, you don't need to use the formula to find the number of permutations or combinations | True, it is built into the OGT Calculator |

If Rick J. has 5 shirts, 4 pants, and three pairs of shoes in his luggage, how many outfits with one of each can he choose from? | 60, you could draw a TREE DIAGRAM, or use the fundamental rule of counting (5 x 4 x 3) |

Where is the "!" button on the OGT calculator? | It is found by pushing the PRB button and then arrowing over two times. |

What Mathematical operation is the same as 7 x 6 x 5 x 4 x 3 x 2 x 1 ? | 7! |

How many ways are there to arrange 9 items in different orders? | 362880 (9! on the calculator) |

If you have 9 items but you are picking a first place and second place item. How many possibilities are there? | 72. It is a permutation of 9 items picking 2 (order matters). On the calculator 9P2. |

Why are there always fewer combinations for a situation than permutations. | Because A,B,C, and C,B,A and A,C,B and B,A,C and B,C,A and C,A,B make 6 different outcomes if order matters, but just one group if order does not matter. |

If you have a class of 17 people and you are going to select three of them to be fed to the phiranas, would that be a permutation or combination? | Combination |

If your class of 17 people was going to select 3 people to compete against Lady Gaga in a boxing match one at a time, would that be a permutation or a combination? | Permutation |

What button do you use if you are going to see how many arrangements there are of ALL the items? | the factorial button, "!" |

nPr, nCr, ! are found where? | the PRB button |

What does the r in nPr and nCr represent? | the number of items you are selecting |

What does the n in nPr and nCr represent? | the total number of items in the set |

Created by:
JHS