Home
Class 12
MATHS
The numbers are chosen from 1 to 30 . Th...

The numbers are chosen from 1 to 30 . The probability that they are not consecutive is

A

142/145

B

144/145

C

143/145

D

1/145

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PERMUTATION AND COMBINATIONS

    HIMALAYA PUBLICATION|Exercise Question Bank|104 Videos

  • PROGRESSIONS

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|97 Videos

Similar Questions

Explore conceptually related problems

Four numbers are chosen at random from {1,2,3, …..40} The probubility that they are not consecutive is

Two non negative integers are chosen at random. The probability that the sum of the square is divisible by 10, is

If two of the 64 squares are chosen at random on a chess board, the probability that they have a side in common is

Three of the six vertices of a regular hexamgon are chosen at random . The probability that the triangle with three vertices is equilateral , equals :

A letter of English alphabet is chosen at random. The probability that the letter is a consonant is:

Three of the six vertices of a regular hexagon are chosen at random . What is probability that the triangle with these vertices is equilateral ?

Three-digit numbers are formed using the digits 0,1, 2, 3, 4, 5 without repetition of digits. If a number is chosen at random, then the probability that the digits either increase or decrease, is

A positive integer is chosen at random . The probability that sum of the digits of its square is 33 is :

Seven digits from the numbers 1 to 9 are written in random order. If the probability that this seven digit number divisible by 9 is p, then the value of 18p is

HIMALAYA PUBLICATION-PROBABILITY-QUESTION BANK
  1. If random variable X has the following probability distribution then t...

    Text Solution

    |

  2. In an entrance examination there are multiple dioice questions. Ihere ...

    Text Solution

    |

  3. The numbers are chosen from 1 to 30 . The probability that they are no...

    Text Solution

    |

  4. Choose the correct answer: In a box containing 100 bulbs, 10 are def...

    Text Solution

    |

  5. In a binomial distribution n =4, P(X = 0) = 16/81 then P(X=4) equals

    Text Solution

    |

  6. A rifleman is firing at a distant target and has only 10 % chance of h...

    Text Solution

    |

  7. If A and B are arbitrary events then

    Text Solution

    |

  8. A coin is tossed 2 n times. The chance that the number of times one ge...

    Text Solution

    |

  9. Three identical dice are rolled. The probability that the same number ...

    Text Solution

    |

  10. A die is tossed thrice. If event of getting an even number is a succes...

    Text Solution

    |

  11. If x = 33^(n), where n is a positive integral value, then what is the ...

    Text Solution

    |

  12. X speaks truth in 60% and 'Y' in 50% of the cases. The probability tha...

    Text Solution

    |

  13. For a party 7 guests are invited by a husband and wife. They sit in a ...

    Text Solution

    |

  14. There are 12 white and 12 red balls in a bag. Balls are drawn one by o...

    Text Solution

    |

  15. A die is thrown 100 times, getting an even number is considered a succ...

    Text Solution

    |

  16. If A and B are mutually exclusive events with P(B) ne 1 then P(A|bar B...

    Text Solution

    |

  17. 5 persons A, B, C, D and E are in a queue of a shop. The probability t...

    Text Solution

    |

  18. Two cards are drawn successively with replacement from a well suffled ...

    Text Solution

    |

  19. If X and Y are independent binomial variates, B(5,1/2) and B(7,1/2), t...

    Text Solution

    |

  20. Let A, B and C be three events such that P(A) = 0.3, P(B) = 0.4, P(C) ...

    Text Solution

    |