Home
Class 11
MATHS
A code word is to consist of two distinc...

A code word is to consist of two distinct English alphabets followed by two distinct number from `1to9.` for example, `C A23` is a code word. How many such code words are there? How many of them end with an even integer?

Text Solution

Verified by Experts

`26*25*9*8=46800`
even integer`=26*25*4*3+26*25*4*5`
`=20800`
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

A code consists of two letters of the alphabet followed by 5 digits .How many such codes are possible ?

A code ward of length 4 consists two distinct consonant in the English alphabet followed by two digits from 1 to 9 with repetition allowed in digits. If the number of code wards so formed ending with an even digit is 432 xx k, then k is equal to

A code word consists of three letters of the English alphabet followed by two digits of the decimal system. If neither letter nor digit is repeated in any code word, then the total number of code words, is

How many words can be formed from the letters of the word, TRIANGLE? How many of these will begin with T and end with E ?

How many words (with or without meaning) of three distinct letters of the English alphabets are there?

How many words (with or without meaning) of three distinct letters of the English aphabets are there?

Find the number of words formed by permuting all letters of the word INDIA. In how many of them vowels are together ?

Find the number of rearrangements of the letters of the word BENEVOLENT. How many them end in L?

How many words can be formed from the letters of the word SERIES, which start with S and end with S?

How many different arrangements can be made by using all the letters in the word MATHEMATICS. How many of them begin with C? How many of them begin with T?

RD SHARMA ENGLISH-PERMUTATIONS-All Questions
  1. In how many ways can 9 examination papers arranged so the best and the...

    Text Solution

    |

  2. How many words can be formed with the letters of the words ‘ORDINATE’ ...

    Text Solution

    |

  3. A code word is to consist of two distinct English alphabets followed b...

    Text Solution

    |

  4. In how many ways can 5 children the arranged in a row such that two of...

    Text Solution

    |

  5. How many words can be formed from the letters of the word, TRIANGLE? ...

    Text Solution

    |

  6. (i) How many different words can be formed with letters of the word ‘S...

    Text Solution

    |

  7. In how many ways can 5 girls and 3 boys be seated in a row so that ...

    Text Solution

    |

  8. How many words can be formed with the letters of the words ‘ORDINATE’ ...

    Text Solution

    |

  9. When a group photograph is taken, all the seven teachers should be in ...

    Text Solution

    |

  10. In a class of 10 students there are 3 girls A, B, C. In how many di...

    Text Solution

    |

  11. Compute: (20 !)/(18 !)

    Text Solution

    |

  12. Compute: (10 !)/(6! 10 !)

    Text Solution

    |

  13. Convert the following products into factorial: 6.7.8.9.10

    Text Solution

    |

  14. Convert the following products into factorial: 2.4.6.8.10

    Text Solution

    |

  15. Find the LCM of 4! 5! and 6!

    Text Solution

    |

  16. Compute: (30 !)/(28 !)

    Text Solution

    |

  17. Compute: (11 !-10 !)/(9!)

    Text Solution

    |

  18. Prove that: 1/(9!)+1/(10 !)+1/(11 !)=(122)/(11 !)

    Text Solution

    |

  19. Find\ x in each of the following: 1/(4!)+1/(5!)=x/(6!)

    Text Solution

    |

  20. Find\ x in each of the following: x/(10 !)=1/(8!)+1/(9!)

    Text Solution

    |