Home
Class 11
MATHS
If P(11 , r)=P(12 , r-1) find ndot...

If `P(11 , r)=P(12 , r-1)` find `ndot`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • PARABOLA

    RD SHARMA ENGLISH|Exercise All Questions|86 Videos

  • PROBABILITY

    RD SHARMA ENGLISH|Exercise All Questions|290 Videos

Similar Questions

Explore conceptually related problems

If P(5, r)=2.P(6, r-1), find r.

If P(5, r)=P(6, r-1) ,find r.

If P(15 ,r-1): P(16 ,r-2)=3:4 , find rdot

Prove the following: P(n , r)=P(n-1, r)+rdotP(n-1,\ r-1)

If "^(n+5)P_(n+1) = (11(n-1))/2"^(n+3)P_n , find ndot

If p = 3, q = 2 and r = -1, find the values of 2p^(2)+3a^(2)-r^(2)+2pr-5pqr

If the nth term of the A.P. 9,7,5,... is same as the nth term of the A.P. 15,12,9,.. find ndot

If ""^(12) P_r =1320, find r.

Find r if 5 P(4,r) = 6P ( 5,r-1) , r ge 1.

If ^n C_r=84 , and ^n C_(r-1)=36 , and r = 1 , then find the value of ndot

RD SHARMA ENGLISH-PERMUTATIONS-All Questions
  1. If \ ^n P4=360 ,\ find the value of ndot

    Text Solution

    |

  2. If P(9, r)=3024 ,\ find rdot

    Text Solution

    |

  3. If P(11 , r)=P(12 , r-1) find ndot

    Text Solution

    |

  4. If P(n-1,\ 3): P(n ,4)=1:9 find n

    Text Solution

    |

  5. If ""^(2n-1)P(n): ""^(2n+1)P(n-1)=22:7, find n.

    Text Solution

    |

  6. If P(n ,5): P(n ,3)=2:1 find n

    Text Solution

    |

  7. Prove that: P(1,1)+2. P(2,2)+3. P(3,3)++ndotP(n , n)=P(n+1,\ n+1)-1.

    Text Solution

    |

  8. In how many ways can five children stand in a queue?

    Text Solution

    |

  9. From among the 36 teachers in a school, one principal and one vice ...

    Text Solution

    |

  10. Four letters E, K, S an V, one in each, were purchased from a plastic ...

    Text Solution

    |

  11. Four books, one each in Chemistry, Physics, Biology and Mathematics, ...

    Text Solution

    |

  12. Find the number of different 4-leter words, with or without meaning, ...

    Text Solution

    |

  13. How many 3 digit numbers are there, with distinct digits, with each ...

    Text Solution

    |

  14. How many words, with or without meaning, can be formed by using all th...

    Text Solution

    |

  15. There are two works each of 3 volumes and two works each of 2 volumes;...

    Text Solution

    |

  16. There are 6 items in column A and 6 items in column B. A student is ...

    Text Solution

    |

  17. How many three digit numbers are there, with no digit repeated.

    Text Solution

    |

  18. How many 6-digit telephone numbers  can be constructed with digits ...

    Text Solution

    |

  19. In how many ways can 6 boys and 5 girls be arranged for a group photog...

    Text Solution

    |

  20. How many 3-digit even numbers can be made using the digits 1,2,3,4,...

    Text Solution

    |