
Divisibility Rules and Number Theory Quiz
Authored by Shramee Somaiya
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the fundamental principle for determining if a number is divisible by 9?
The number must end in 5
The number must be even
The last digit must be zero
The sum of its digits must be divisible by 9
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a reliable method to check divisibility by 4?
The number ends in 0
The last digit is even
The sum of digits is divisible by 4
The last two digits form a number divisible by 4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To determine if a number is divisible by 5, what specific characteristic must the number have?
Must end in 0 or 5
Must be an even number
Must have a sum of digits divisible by 5
Must be greater than 100
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the divisibility rule for checking if a number is divisible by 3?
The number must end in 5
The number must be even
The sum of its digits must be divisible by 3
The last digit must be zero
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a number is divisible by both 2 and 3, it is guaranteed to be divisible by:
12
9
15
6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the quickest way to determine if a number is divisible by 10?
The number is even
The number ends in 0
The last two digits are divisible by 10
The sum of digits is divisible by 10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For a number to be divisible by 8, what condition must its last three digits satisfy?
Must end in 0
Must be an even number
Must be divisible by 2
Must be divisible by 8
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