Home
Class 11
MATHS
If (lfloor9)/(lfloor(9-r))=3024, find r....

If `(lfloor9)/(lfloor(9-r))`=3024, find r.

Text Solution

Verified by Experts

The correct Answer is:
r=4
Promotional Banner

Topper's Solved these Questions

  • COMBINATORICS AND MATHEMATICAL INDUCTION

    PREMIERS PUBLISHERS|Exercise EXERCISE 4.1|40 Videos

  • COMBINATORICS AND MATHEMATICAL INDUCTION

    PREMIERS PUBLISHERS|Exercise EXERCISE 4.2|33 Videos

  • BINOMIAL THEOREMN,SEQUENCES AND SERIES

    PREMIERS PUBLISHERS|Exercise PROBLEMS FOR PRACTICE(Choose the correct option for the following)|31 Videos

  • DIFFEREMTIAL CALCULUS DIFFERENTIABILITY AND METHODS OF DIFFERENTITAION

    PREMIERS PUBLISHERS|Exercise PROBLEMS FOR PRACTICE|73 Videos

Similar Questions

Explore conceptually related problems

If (lfloorn)/(lfloor(n-r)) =360, find n.

If (lfloor7)/(lfloorn)=42 Find n.

Evaluate (lfloorn)/(lfloorr lfloor(n-r)) given that n=8, r=5.

If 1/(lfloor6) + 1/(lfloor7) = 64/(lfloorn) find n.

lfloor(n) + lfloor(n+1) is :

Evaluate (lfloor5)/(lfloor3)- (lfloor5)/(lfloor2xxlfloor3)

(i) ""^(100)C_(2)=4950 (ii) lfloor(4) + lfloor(5) = lfloor(9) (iii) The no. of diagonals of a polygon of 10 sides is 35. (iv) ""^(n)C_(r)=""^(n)C_(n+r) From the above find which pair is true.

Find the value of Q = (lfloor6)/(lfloor3)

PREMIERS PUBLISHERS-COMBINATORICS AND MATHEMATICAL INDUCTION-PROBLEMS FOR PRACTICE (Choose the correct option for the following)
  1. If (lfloor9)/(lfloor(9-r))=3024, find r.

    Text Solution

    |

  2. 0! Is :

    Text Solution

    |

  3. If n different objects are to placed in m places then the number of wa...

    Text Solution

    |

  4. There are 5 bulbs in a room. Each one of them can be operated independ...

    Text Solution

    |

  5. If 7!/n!=7 then the value of n is:

    Text Solution

    |

  6. If n! + (n-1)! =144, then the value of n is :

    Text Solution

    |

  7. Prove ""^(n)P(r)=""^(n-1)P(r) +r. ""^(n-1)P(r-1)

    Text Solution

    |

  8. ""^(7)C(3) + ""^(7)C(2)=""^(x)C(y) then x and y are:

    Text Solution

    |

  9. If 5 parallel lines intersect another set of 4 , parallel lines (not p...

    Text Solution

    |

  10. 1^(2) + 2^(2) + 3^(2) + …+ 10^(2) is :

    Text Solution

    |

  11. If ""^(x^(2)-x)C(7)=""^(x^(2)-x)C(5) then x is :

    Text Solution

    |

  12. A photographer wants to take a photo of 3 students out of 6 students ...

    Text Solution

    |

  13. In 3 fingers, the number of ways five rings can be worn in...............

    Text Solution

    |

  14. There are 8 points in a plane, no three of them are collinear .The num...

    Text Solution

    |

  15. 10 students compete in a race. In how many ways first two prizes be g...

    Text Solution

    |

  16. How many lines can be drawn given six points of which 3 are collinear?

    Text Solution

    |

  17. Find the odd one out:

    Text Solution

    |

  18. Among the following, find which one cannot be no. of digonals of a pol...

    Text Solution

    |

  19. Find the correct statement:

    Text Solution

    |

  20. Find the correct statement:

    Text Solution

    |

  21. Find the incorrect statement:

    Text Solution

    |