Home
Class 12
MATHS
Evaluate : (n!)/((n-r)!) where n=5,r=2...

Evaluate :
`(n!)/((n-r)!)` where n=5,r=2

Text Solution

Verified by Experts

20
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    AAKASH INSTITUTE|Exercise Assignment Section A Objective type questions (One option is correct )|51 Videos

  • PERMUTATIONS AND COMBINATIONS

    AAKASH INSTITUTE|Exercise Assignment Section B Objective type questions (One option is correct )|39 Videos

  • PERMUTATIONS AND COMBINATIONS

    AAKASH INSTITUTE|Exercise Assignment Section-J (Aakash Challengers Questions)|7 Videos

  • MATRICES

    AAKASH INSTITUTE|Exercise Assignment (Section - J) Aakash Challengers Questions|3 Videos

  • PRINCIPLE OF MATHEMATICAL

    AAKASH INSTITUTE|Exercise Section-D:(Assertion-Reason Type Questions)|12 Videos

Similar Questions

Explore conceptually related problems

(n!)/(r!(n-r)!), whe nn=5,r=2

Evaluate (n!)/(r!(n-r)!) , where n=15,r=4

Evaluate (n!)/(r!(n-r)!) when n=5,r=2

Evaluate (n!)/((n-r)!) when (i) n=6,r=2n=9,r=5

Evaluate (n!)/(r!(6-3)!) , where n=6,r=3

Evaluate (n!)/((n-r)!) when : (i) n=10,r=4 (ii) r = 1 (iii) r = 2.

Evaluate (n!)/((n-r)!) when n=7 and r=2

Evaluate (n!)/((n-r)!) , when (i) n = 6, r = 2 (ii) n = 9, r = 5

Evaluate (n!)/((n-r)!) , when : (i) n=6, r=2 (ii) n=9, r=5

Evaluate (n!)/((n-r)!) when n = 12 and r = 3.

AAKASH INSTITUTE-PERMUTATIONS AND COMBINATIONS -Try Yourself
  1. Convert into factorials 3.6.9.12.15.18.21

    Text Solution

    |

  2. Convert into factorials : 2.4.6.8.10.12……..50

    Text Solution

    |

  3. Evaluate : (n!)/((n-r)!) where n=5,r=2

    Text Solution

    |

  4. Evaluate (n!)/(r!(n-r)!), where n=15,r=4

    Text Solution

    |

  5. Evaluate ""^(20)P(3)

    Text Solution

    |

  6. Evaluate ""^(5)P(3)xx""^(7)P(3)

    Text Solution

    |

  7. Find n, if ""^(n)P(5)=42 ""^(n)P(3), n ge 5

    Text Solution

    |

  8. Show that ""^(n)P(n)=2""^(n)P(n-2)

    Text Solution

    |

  9. In how many ways, the letter of word NUMBER can be arranged ?

    Text Solution

    |

  10. In how many ways, the letters of word FRACTION can be arranged ?

    Text Solution

    |

  11. How many numbers lying between 100 and 1000 can be formed with the dig...

    Text Solution

    |

  12. How many four digit numbers are there in all?

    Text Solution

    |

  13. How many permulations of the letters of the word KARNAL are there ?

    Text Solution

    |

  14. How many words can be formed using the letters E twice , the letter C ...

    Text Solution

    |

  15. Find the number of words formed by permuting all letters of the word I...

    Text Solution

    |

  16. Find the number of different words formed with the letters of the word...

    Text Solution

    |

  17. How many permutations can be made out of the letters of the word TRIAN...

    Text Solution

    |

  18. Find out number of permutations that can be had from the letters of th...

    Text Solution

    |

  19. How many numbers greater than 50,000 can be formed by using the digits...

    Text Solution

    |

  20. How many numbers greater than a million can be formed by using the dig...

    Text Solution

    |