Home
Class 12
MATHS
If lamda be the number of 3-digit number...

If `lamda` be the number of 3-digit numbers are of the form xyz with `x lt y, z le y and x ne0`, the value of `(lamda)/(30)` is

Text Solution

AI Generated Solution

To solve the problem, we need to find the number of 3-digit numbers of the form xyz such that \( x < y \), \( z \leq y \), and \( x \neq 0 \). We will denote this count as \( \lambda \) and then compute \( \frac{\lambda}{30} \). ### Step-by-Step Solution: 1. **Identify the Range for y:** Since \( y \) must be greater than \( x \) and can take values from 2 to 9 (as \( x \) cannot be 0), we can set: \[ y = n \quad \text{where} \quad n \in \{2, 3, 4, 5, 6, 7, 8, 9\} ...
Promotional Banner

Topper's Solved these Questions

  • PERMUTATIONS AND COMBINATIONS

    ARIHANT MATHS ENGLISH|Exercise JEE Type Solved Examples: Single Matching Type Questions|1 Videos
  • PERMUTATIONS AND COMBINATIONS

    ARIHANT MATHS ENGLISH|Exercise Exercise For Session 1|11 Videos
  • PARABOLA

    ARIHANT MATHS ENGLISH|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|36 Videos
  • PROBABILITY

    ARIHANT MATHS ENGLISH|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|54 Videos

Similar Questions

Explore conceptually related problems

The number of three digit numbers of the form xyz such that x lt y , z le y and x ne0 , is

The number of three digit numbers of the form xyz such that x lt y , z le y and x ne0 , is a ) 240 b) 244 c) 276 d) 285

If the number of solutions of the equation x+y+z=20, where 1 le x lt y lt z and x, y, z in I is k, then (k)/(10) is equal to

If the number of integral solutions (x, y, z) of the equation xyz = 18 is t, then the value of (t)/(8) is

Consider the function f(x)=max{|sinx|,|cosx|},AA"x"in[0,3pi]. if lamda is the number of points at which f(x) is non - differentiable , then value of (lamda^3)/5 is

Let x and y be two different digits. If the sum of the two digit numbers formed by using both the digits is a perfect square, then value of x+y is

The tangents and normals are drawn at the extremites of the latusrectum of the parabola y^2=4x . The area of quadrilateral so formed is lamda sq units, the value of lamda is

A line x=lamda intersects the graph of y=log_5 x and y=log_5(x+4) .The distance between the point of intersection is 0.5. Given lamda=a+sqrtb ,where a and b are integers , the value of (a+b) is

If the median and the range of four numbers {x,y,2x,+y,x-y}, where 0 lt y lt x lt 2y are 10 and 28 respectively, then the mean of numbers is

If x,y,z be three positive numbers such that xyz^(2) has the greatest value (1)/(64) , then the value of (1)/(x)+(1)/(y)+(1)/(z) is

ARIHANT MATHS ENGLISH-PERMUTATIONS AND COMBINATIONS -Exercise (Questions Asked In Previous 13 Years Exam)
  1. If lamda be the number of 3-digit numbers are of the form xyz with x l...

    Text Solution

    |

  2. There is a rectangular sheet of dimension (2m-1)xx(2n-1), (where m > 0...

    Text Solution

    |

  3. If the letters of the word SACHIN are arranged in all possible ways...

    Text Solution

    |

  4. lf r, s, t are prime numbers and p, q are the positive integers such t...

    Text Solution

    |

  5. At an election a voter may vote for nany number of candidates , not gr...

    Text Solution

    |

  6. The letters of the word COCHIN are permuted and all the permutation...

    Text Solution

    |

  7. The set S""=""{1,""2,""3,""........ ,""12) is to be partitioned into...

    Text Solution

    |

  8. Consider all possible permutations of the letters of the word ENDEANOE...

    Text Solution

    |

  9. How many different words can be formed by jumbling the letters in the ...

    Text Solution

    |

  10. In a shop, there are five types of ice-creams available. A child buys ...

    Text Solution

    |

  11. The number of seven digit integers, with sum of the digits equal to 10...

    Text Solution

    |

  12. From 6 different novels and 3 different dictionaries, 4 novels and ...

    Text Solution

    |

  13. There are two urns. Urn A has 3 distinct red balls and urn B has 9 ...

    Text Solution

    |

  14. Statement-1: The number of ways of distributing 10 identical balls in ...

    Text Solution

    |

  15. There are 10 points in a plane, out of these 6 are collinear. The numb...

    Text Solution

    |

  16. The total number of ways in which 5 balls of differert colours can be ...

    Text Solution

    |

  17. Let n denote the number of all n-digit positive integers formed by the...

    Text Solution

    |

  18. Let a(n) denote the number of all n-digit numbers formed by the digits...

    Text Solution

    |

  19. Assuming the balls to be identical except for difference in colours, t...

    Text Solution

    |

  20. Let Tn be the number of all possible triangles formed by joining ve...

    Text Solution

    |

  21. Consider the set of eight vector V={a hat i+b hat j+c hat k ; a ,bc in...

    Text Solution

    |