algebra alert | |

I have a huge pile of doubts in algebra and so I am posting them here find the sum of the series 1(1!)+2 (2!)+ .......+n(n!) |

Re: algebra alert | |

S is a set of three numbers whose sum and HCF are 168 and 8 respectively. How many values are possible for S if at least one of the numbers is not more than 24? |

Re: algebra alert | |

Please solve this problem |

Re: algebra alert | |

Why can't we take x=4,y=1 and z=16 here too the hcf is 1and 1 of the numbers is less than 24 |

Re: algebra alert | |

Hi Soumya (1, 4, 16) is same as that of (4, 1, 16) and has already been counted in case (i). Please check. Kamal Lohia |

Re: algebra alert | |

Sir I think there is one more case 2,9,10 |

Re: algebra alert | |

6 black and 6 white balls of the same size are distributed among 10 urns such that each urn contains at least one ball. Find the total number of distributions? |

Re: algebra alert | |

How many four digit numbers contain exactly two distinct digits? |

Re: algebra alert | |

Hi Soumya This is not a CAT-type problem as it involves lot of casework that too with big numbers. You can have an idea for this here. Kamal Lohia |

Re: algebra alert | |

Again a bit of casework. You can go for a similar problem here. Kamal Lohia |