Home
Class 11
MATHS
If 1/(8!)+1/(9!) =x/(10!), find x....

If `1/(8!)+1/(9!) =x/(10!)`, find x.

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

If 1/(6!)+1/(7!)=x/(8!) , find x

Find the value of unknown in the following : (3/(8))^(2x-3)xx(3/(8))^(-1)= 1 find x

If f(x) =x^n and if f’ (1) = 10, find n.

Fill in the blanks from the given options : (1)/(2) , 9 (6x - 9) (3x^(2) - 9x + 5)^(8), 49, -2, (1)/(2) [log(sin x)]^(2) + c, (1)/(x), 10 , onto (d)/(dx) [3x^(2) - 9x+5]^(9) = ………

Fill in the blanks from the given options : (1)/(2) , 9 (6x - 9) (3x^(2) - 9x + 5)^(8), 49, -2, (1)/(2) [log(sin x)]^(2) + c, (1)/(x), 10 , onto int (log(sinx))/(tan x) dx = ………

If f (9) = 9, f '(9) = 1, then lim_(x rarr 9) (8-sqrt(f(x)))/(3-sqrtx) =

Find all points of discontinuity of f, where f is defined by f(x) = {:{(x^(10) -1, if x le1),(x-5, if x>1):}

If f(x) =x^3+7x^2+8x-9 , find f'(4).

Let R be the relation from {11, 12, 13} to {8, 9, 10} , defined by y=x-3 then R^(-1) is

MODERN PUBLICATION-PERMUTATIONS AND COMBINATIONS-EXERCISE
  1. Find the L.C.M. of 4!, 5! and 6!.

    Text Solution

    |

  2. If 1/(9!)+1/(10!) =n/(11!), find n.

    Text Solution

    |

  3. If 1/(8!)+1/(9!) =x/(10!), find x.

    Text Solution

    |

  4. Prove that n! (n+2)=n!+(n+1)! .

    Text Solution

    |

  5. If (n+1)! = 12 [(n-1)!], find n.

    Text Solution

    |

  6. If (n+2)! = 60 [(n-1)!], find n.

    Text Solution

    |

  7. If (n+2)! =(2550)(n!), find n.

    Text Solution

    |

  8. If (n!)/(2!(n-2)!):(n!)/(4!(n-4)!) =2:1. Find the value of n.

    Text Solution

    |

  9. Prove that (n!)/(r!(n-r)!)+(n!)/((r-1)!(n-r+1)!)= ((n+1)!)/ (r!(n-r+1)...

    Text Solution

    |

  10. Prove that there are exactly 4! numbers between 1000 and 10000 that co...

    Text Solution

    |

  11. show that 2^16 divides 32!. also, find the largest value of n for whic...

    Text Solution

    |

  12. There are five colleges in a city. In how many ways can a man send 3 o...

    Text Solution

    |

  13. John wants to go abroad by ship and return by air. He has a choice of ...

    Text Solution

    |

  14. There are 5 routes from place A to place B and 3 routes from place B t...

    Text Solution

    |

  15. If there are 20 steamers plying between places A and B, in how many wa...

    Text Solution

    |

  16. If there are 20 steamers plying between places A and B, in how many wa...

    Text Solution

    |

  17. In how many ways can 5 persons draw water from 5 taps, assuming no tap...

    Text Solution

    |

  18. In how many ways can 3 people be seated in a row containing 7 seats ?

    Text Solution

    |

  19. A sample of 3 bulbs is tested. A bulb is labelled ‘G’ if it is good a...

    Text Solution

    |

  20. How many 4-letter code words are possible using the first 10 letters o...

    Text Solution

    |