Permutation & Combination !!!!!! help | |

Q) How many 6-digit numbers contain exactly 4 different digits ? i) 4536 ii) 2,94,840 iii) 1,91,520 iv) none How to solve this question ??? |

Re: Permutation & Combination !!!!!! help | |

Thank you so much!!!!!! |

Re: Permutation & Combination !!!!!! help | |

Thank you so much !!! again I really appreciate this !! |

Re: Permutation & Combination !!!!!! help | |

Good work Himanshu Both answers are correct. Kamal Lohia |

Re: Permutation & Combination !!!!!! help | |

Hi Saurabh Yes it will be P(206, 200) = 206!/6! Kamal Lohia |

Re: Permutation & Combination !!!!!! help | |

Hi Nikita Please elaborate your expression so that it is easier to comment on. Kamal Lohia |

Re: Permutation & Combination !!!!!! help | |

can you pls explain me how is it 103c3..what is the idea behind it? |

Re: Permutation & Combination !!!!!! help | |

why 9/10 of the original answer? plz explain |

Re: Permutation & Combination !!!!!! help | |

Sir how u got dat c(103,3) I didn't get it..can you please explain |

Re: Permutation & Combination !!!!!! help | |

how 103c3 came and 52c3?? pls explain , am unable to get it |