Home
Class 14
MATHS
Find the number of all whole numbers for...

Find the number of all whole numbers formed on the screen of a calculator which can be recognised as numbers with (unique) correct digits when they are read inverted. The greatest number formed onn its screen is 999999.

A

98970

B

89912

C

110050

D

100843

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PERCENTAGES

    QUANTUM CAT|Exercise QUESTION BANK|271 Videos

  • PROBABILITY

    QUANTUM CAT|Exercise QUESTION BANK|206 Videos

Similar Questions

Explore conceptually related problems

Write the greatest 6-digit number formed by three difference digits.

Find the sum of all those numbers which can be formed by the digits 2,3,4 and 5.

Find the sum of all the numbers that can be formed with the digits 2,3,4,5 taken all at a time.

The number of whole numbers between the smallest whole number and the greatest 2-digit number is

Find the sum of all those numbers which can be formed with the digits 0,1,2,3 taken together.

Find the number of 3-digit numbers, formed with the digit (2,5,4,6) when repetition of the digits is allowed.

The number of whole numbers between the smallest whole number and the greatest 2-digit number is 101 (b) 100 (c) 99 (d) 98

QUANTUM CAT-PERMUTATIONS & COMBINATIONS-QUESTION BANK
  1. Mr. john has x children by his first wife and Ms. Bashu has x+1 childr...

    Text Solution

    |

  2. Find the number of natural numbers which are smaller than 2.10^8 and a...

    Text Solution

    |

  3. Find the number of all whole numbers formed on the screen of a calcula...

    Text Solution

    |

  4. Find the number of ways of putting five distinct rings on four fingers...

    Text Solution

    |

  5. If n distinct things are arranged in a circle, find the number of ways...

    Text Solution

    |

  6. Find the number of different selections of 5 letters, which can be mad...

    Text Solution

    |

  7. In the entrance test of Wharton Business School, the maximum marks for...

    Text Solution

    |

  8. A person goes for an examination in which there are four papers with a...

    Text Solution

    |

  9. Mark Shekar Garg goes to a school to demonstrate how the kids can use ...

    Text Solution

    |

  10. A king calls 11 masseurs for his queen, as she wants the body massage ...

    Text Solution

    |

  11. There is a set of 10 integers {0,1,2,3,...,9}. In how many ways you ca...

    Text Solution

    |

  12. How many integer solutions are there to the equation x1+x2+x3+x4 = 30,...

    Text Solution

    |

  13. If ""^(n-1)Cr=(k^2-3)""^nC(r+1), then kin :

    Text Solution

    |

  14. A shopping mall in Kashipur, a meditative and idyllic town near Nainit...

    Text Solution

    |

  15. Find the total number of quadratic polynomial ax^2+bx+c, if a,b,c are ...

    Text Solution

    |

  16. Find the number of isosceles trinagles with integers sides, if no side...

    Text Solution

    |

  17. A five-digit number is called a mountain number if the first three dig...

    Text Solution

    |

  18. If a triangle is inscribed in a regular decagon such that all the thre...

    Text Solution

    |

  19. A wise old woman calls upon all her 7 sons at her eleventh hour and ha...

    Text Solution

    |

  20. An engineer in the urban planning department of IIM Kashipur, situated...

    Text Solution

    |