# Thread: 9 digit no., prob divisible by 11 is p/q. Find p+q.

1. ## 9 digit no., prob divisible by 11 is p/q. Find p+q.

if a nine digit no is formed using 1 to 9 without repetition and if the probability that they will be divisible by 11 is p/q then p+q=

can yu tell me the divisibility of 11

2. ## Re: prob

A number is divisible by 11 if the difference between the sum of the digits in the odd positions counting from the left (the first, the third ...) and the sum of the remaining digits is divisible by 11.

For example:

1. 58564
The sum of the digits in the odd positions counting from the left is 5+5+4=14
The sum of the remaining digits is 8+6=14

14-14=0, and 0 is divisible by 11, so 58564 is divisible by 11 too.

2. 635047
The sum of the digits in the odd positions counting from the left is 6+5+4=15
The sum of the remaining digits is 3+0+7=10

15-10=5, 5 isn't divisible by 11, so 635047 isn't divisible by 11.

3. ## Re: 9 digit no., prob divisible by 11 is p/q. Find p+q.

how to do this problem
in probability

,

,

### probability that a nine digit number is divisible by 11

Click on a term to search for related topics.
The text passage contains a mathematical question about the probability of a nine-digit number being divisible by 11 and asks for the sum of the numerator and denominator of that probability. The passage also includes a response explaining the rule for divisibility by 11 but does not provide an answer to the original question.
single_question
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
system
# Thread: 9 digit no., prob divisible by 11 is p/q. Find p+q.

1. ## 9 digit no., prob divisible by 11 is p/q. Find p+q.

if a nine digit no is formed using 1 to 9 without repetition and if the probability that they will be divisible by 11 is p/q then p+q=

can yu tell me the divisibility of 11

2. ## Re: prob

A number is divisible by 11 if the difference between the sum of the digits in the odd positions counting from the left (the first, the third ...) and the sum of the remaining digits is divisible by 11.

For example:

1. 58564
The sum of the digits in the odd positions counting from the left is 5+5+4=14
The sum of the remaining digits is 8+6=14

14-14=0, and 0 is divisible by 11, so 58564 is divisible by 11 too.

2. 635047
The sum of the digits in the odd positions counting from the left is 6+5+4=15
The sum of the remaining digits is 3+0+7=10

15-10=5, 5 isn't divisible by 11, so 635047 isn't divisible by 11.

3. ## Re: 9 digit no., prob divisible by 11 is p/q. Find p+q.

how to do this problem
in probability

,

,

### probability that a nine digit number is divisible by 11

Click on a term to search for related topics.
user
The text passage contains a mathematical question about the probability of a nine-digit number being divisible by 11 and asks for the sum of the numerator and denominator of that probability. The passage also includes a response explaining the rule for divisibility by 11 but does not provide an answer to the original question.

TYPE: SINGLE_QUESTION