Home
Class 12
MATHS
Seven digits from the numbers 1, 2, 3, 4...

Seven digits from the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 are written in random order. Let the probability that this number is divisible by 9 be `p=a/b`. Where a, b are relatively prime positive integers, then the value of a + b is ……….

Text Solution

Verified by Experts

The correct Answer is:
10
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PROBABILITY

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION-J (aakash challengers questions)|11 Videos

  • PROBABILITY

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION-H (multiple true-false type questions)|6 Videos

  • PRINCIPLE OF MATHEMATICAL

    AAKASH INSTITUTE ENGLISH|Exercise Section-D:(Assertion-Reason Type Questions)|11 Videos

  • RELATIONS AND FUNCTIONS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section - J) Aakash Challengers Questions|8 Videos

Similar Questions

Explore conceptually related problems

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

The digits 1,2,3,4,5,6,7,8 and 9 are written in random order to form a nine digit number. The probability that this number is divisible by 4, is

Knowledge Check

  • From the set {1,2,3,4,5} two numbers a and b (a != b) are chosen at random . The probability that a/b is an integar is

    A
    `1/3`
    B
    `1/4`
    C
    `1/2`
    D
    `3/5`

    • Similar Questions

    Explore conceptually related problems

    Five different digits from the set of numbers {1, 2, 3, 4, 5, 6, 7} are written in random order. Find the probability that five-digit number thus formed is divisible by 9.

    The digits 1, 2, 3, 4, 5, 6, 7, 8, and 9 are written in random order to form a nine digit number.Let p be the probability that this number is divisible by 36, find 9p.

    Five numbers are selected from 1, 2, 3, 4, 5, 6, 7, 8 and 9. The probability that their product is divisible by 5 or 7 is

    If a, b, c in N , the probability that a^(2)+b^(2)+c^(2) is divisible by 7 is (m)/(n) where m, n are relatively prime natural numbers, then m + n is equal to :

    If 9 digits (1 to 9) are arranged in the spaces of number 1263 _______6, what is the probability that the number is divisible by 9.

    Three different numbers are selected at random from the set A={1,2,3,……..,10} . Then the probability that the product of two numbers equal to the third number is (p)/(q) , where p and q are relatively prime positive integers then the value of (p+q) is :

    Numbers of three digits with repetition using digits {1, 2, 3, …..9} are formed. The probability that a selected number is divisible by 5 is

    Home
    Profile