Home
Class 11
MATHS
A number is selected from the set {1, 2,...

A number is selected from the set `{1, 2, 3,.., 20}`. The probability That the selected number is divisible by 3 or 4 is

A

`1/2`

B

`2/3`

C

`2/5`

D

`1/8`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • EXAMINATION QUESTION PAPER - JUNE 2019

    FULL MARKS|Exercise PART -IV|7 Videos

  • INTEGRAL CALCULUS

    FULL MARKS|Exercise EXERCISE - 11.13|23 Videos

Similar Questions

Explore conceptually related problems

A number is selected from the seet {1,2,3,. . . . . . 20} The probability that the selected number is divisible by 3 or 4 is ________

A number is selected from the set {2,3,…,30}. The probability that the selected number is a prime number is

A four figure number is formed of the figures 1, 2, 3, 5 with no repetitions. The probability that the number is divisible by 5 is a. 3//4 b. 1//4 c. 1//8 d. none of these

Four numbers are chosen at random (without replacement) from the set {1, 2, 3, ....., 20}. Statement-1: The probability that the chosen numbers when arranged in some order will form an AP Is 1/(85) . Statement-2: If the four chosen numbers from an AP, then the set of all possible values of common difference is {1, 2, 3, 4, 5}. (1) Statement-1 is true, Statement-2 is true; Statement-2 is not the correct explanation for Statement-1 (2) Statement-1 is true, Statement-2 is false (3) Statement-1 is false, Statement-2 is true (4) Statement-1 is true, Statement-2 is true; Statement-2 is the correct explanation for Statement-1

Two integers are selected at random from the set {1, 2, …, 11}. Given that the sum of selected numbers is even, the conditional probability that both the numbers are even is

A three-digit number is selected at random from the set of all three-digit numbers. The probability that the number selected has all the three digits same is 1//9 b. 1//10 c. 1//50 d. 1//100

FULL MARKS-EXAMINATION QUESTION PAPER MARCH 2019-MATHEMATICS
  1. The number of 5 digit numbers all digits of which are odd is

    Text Solution

    |

  2. If f(x)={{:(2a-x","" for "-altxlta),(3x-2a","" for "xgea):} then ...

    Text Solution

    |

  3. A number is selected from the set {1, 2, 3,.., 20}. The probability Th...

    Text Solution

    |

  4. Which of the following is not a periodic function with period 2pi?

    Text Solution

    |

  5. Straight line joining the points (2,3) and (-1,4) passes through the p...

    Text Solution

    |

  6. The minimum and the maximum values of |cos x|-2 are respectively …………

    Text Solution

    |

  7. If f(x)=x^(2)-3x, then the points at which f(x)=f'(x) are

    Text Solution

    |

  8. The unit vector parallel to the resultant of the vectors hati+hatj-hat...

    Text Solution

    |

  9. It is given that the events A and B are such that P(A) = 1/4, P (A//B)...

    Text Solution

    |

  10. If veca,vecb are the position vectors A and B then which one of the fo...

    Text Solution

    |

  11. If |x+2| le 8, then x belongs to ………..

    Text Solution

    |

  12. The expansion of (1-x)^-2 is?

    Text Solution

    |

  13. If f : R to R is defined by f (x) = |x| -5, then the range of f is ……...

    Text Solution

    |

  14. Which one of the following is true about the matrix [(1,0,0),(0,0,0),(...

    Text Solution

    |

  15. Write the value of Horizontal component .

    Text Solution

    |

  16. Write the relationship between Permutation and Combination?

    Text Solution

    |

  17. Count the number of positive integers greater than 6000 and less than ...

    Text Solution

    |

  18. Find the separated equations from a combined equation of a straight li...

    Text Solution

    |

  19. Define diagonal and scalar matrices?

    Text Solution

    |

  20. Find a unit vector along the direction of the vector 5 hati - 3 hatj +...

    Text Solution

    |