Podcast
Questions and Answers
Which of the following numbers is divisible by both 9 and 11?
Which of the following numbers is divisible by both 9 and 11?
- 277218
- 10098 (correct)
- 12345
- 181998
Which of the following numbers is not divisible by 9?
Which of the following numbers is not divisible by 9?
- 77832
- 49104
- 45390 (correct)
- 35253
For which of the following numbers is the sum of digits divisible by 9?
For which of the following numbers is the sum of digits divisible by 9?
- 35253
- 49104 (correct)
- 45390
- 10098 (correct)
Which of the following represents a valid method to check divisibility by 11?
Which of the following represents a valid method to check divisibility by 11?
Flashcards
Divisibility Rule of 9
Divisibility Rule of 9
A number is divisible by 9 if the sum of its digits is divisible by 9.
Divisibility Rule of 8
Divisibility Rule of 8
A number is divisible by 8 if the last three digits are divisible by 8.
Divisibility Rule of 11
Divisibility Rule of 11
A number is divisible by 11 if the difference between the sum of digits at odd places and the sum of digits at even places is either 0 or a multiple of 11.
Divisibility by 9 and 11
Divisibility by 9 and 11
Signup and view all the flashcards
Divisibility Rules
Divisibility Rules
Signup and view all the flashcards
Study Notes
RRB Maths PYQs - Number System
- Divisibility Rules:
- Rule for 9: Sum of digits divisible by 9, then number is divisible by 9
- Rule for 11: Difference between sum of alternate digits divisible by 11, then number is divisible by 11
- Rule for 8: Last three digits are divisible by 8, then number is divisible by 8
- Problems:
- Find the number divisible by both 9 and 11 in a given set of options
- Find the number that is not divisible by 9 in a given set
- Find the number that is not divisible by 8 in a given set
- Find the values of x and y if a given 7-digit number is divisible by 11
- Find the value of 3k+2p if a given 11-digit number is divisible by 72
- Find the remainder when a given set of numbers is divided by 17
- Problem example: If the number 171 x 172 x 173 is divided by 17, find the remainder
Question Types
- Divisibility rules - Questions involving the application of divisibility rules for specific numbers
- Number systems - Calculating values and finding unknown variables based on specified conditions and rules.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
