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
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Divisibility Rules
Divisibility Rules
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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.
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Description
Test your knowledge of the number system with this quiz focused on divisibility rules. You'll tackle problems involving the numbers 9, 11, and 8, as well as find remainders and values related to divisibility. Perfect for anyone preparing for RRB exams!
