Home
Class 11
MATHS
The students in a class are seated accor...

The students in a class are seated according to the marks in the previous examination. Once it so happens that four of these students get equal marks and therefore the same rank. To decide their seating arrangement, the teacher wants to write down all possible arrangements, one in each of separate bits of paper, in order to choose one of these by lots. How many bits of paper are required ?

Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    MODERN PUBLICATION|Exercise EXERCISE|319 Videos

  • MATHEMATICAL REASONING

    MODERN PUBLICATION|Exercise EXERCISE|169 Videos

  • PROBABILITY

    MODERN PUBLICATION|Exercise EXERCISE|348 Videos

Similar Questions

Explore conceptually related problems

20 % of 25 students in a class are boys.How many girls are in the class?

In how many ways can 8 students be seated in : a line ?

A comb run through one's dry hair attracts small bits of paper. This is due

Why does a plastic comb rubber in hair attract small bits of paper?

The digits, from 0 to 9, are written on slips of paper and placed in a box. Three of the Slips of paper are drawn and placed in order. How many different outcomes are possible ?

The letters of the word ‘TUESDAY’ are arranged in a line, each arrangement ending with letter S. How many different arrangements are possible ? How many of them start with letter D ?

A tea party is arranged for 16 persons along two sides of a long table with 8 chairs on each side. Four persons wish to sit on one particular and two on the other side. In how many ways can they be seated?

Eighteen guests have to be Seated, half on each side of a long table. Four particular guests desire to sit on one particular side and three others on the other side. Determine the number of ways in which the Seating arrangements can be made.

MODERN PUBLICATION-PERMUTATIONS AND COMBINATIONS-EXERCISE
  1. Find the number of different signals that can be generated by arrangin...

    Text Solution

    |

  2. In a monthly test, the teacher decides that there will be three questi...

    Text Solution

    |

  3. The students in a class are seated according to the marks in the previ...

    Text Solution

    |

  4. Eight children are to be seated on a bench. In how many ways can the c...

    Text Solution

    |

  5. Eight children are to be seated on a bench. How many arrangements are ...

    Text Solution

    |

  6. How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and ...

    Text Solution

    |

  7. A coin is tossed three times and the outcomes are recorded. How many p...

    Text Solution

    |

  8. A class consists of 40 girls and 60 boys. In how many ways can a presi...

    Text Solution

    |

  9. How many numbers are there between 100 and 1000 such that 7 is in the ...

    Text Solution

    |

  10. How many numbers are there between 100 and 1000 such that at least one...

    Text Solution

    |

  11. How many of them have exactly one of their digits as 7 ?

    Text Solution

    |

  12. A mint prepares metallic calendars specifying months, dates and days i...

    Text Solution

    |

  13. For a set of five true or false questions, no student has written all ...

    Text Solution

    |

  14. How many automobile licence plates can be made if the inscription on e...

    Text Solution

    |

  15. The Licence plates for vehicles registered in Delhi consist of 3 lette...

    Text Solution

    |

  16. Evaluate : "^8P5.

    Text Solution

    |

  17. Evaluate : "^10P3.

    Text Solution

    |

  18. Evaluate : "^20P4.

    Text Solution

    |

  19. Evaluate : "^75P2.

    Text Solution

    |

  20. Find r if : ^5Pr= "^6P(r-1).

    Text Solution

    |