Math Quiz: Take A Short Test On Prime Numbers
Welcome to our Prime Numbers Math Quiz! Are you ready to put your mathematical prowess to the test? Dive into the world of prime numbers and challenge yourself with a variety of questions designed to sharpen your number sense.
From identifying prime numbers to understanding their unique properties, this quiz covers it all. Whether you're a math whiz or just looking to expand your knowledge, this quiz offers an opportunity to explore the fascinating realm of prime numbers.
Get ready to tackle these questions and more as you embark on a journey through the intriguing world of prime numbers. Sharpen Read moreyour pencil, sharpen your mind, and let's see if you have what it takes to ace our Prime Numbers Quiz!
Prime Numbers Questions and Answers
- 1.
Is 35 a prime number?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
35 is not a prime number since 35 = 5*7. 35 is divisible by 5 and 7.Rate this question:
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- 2.
Is 23 a prime number?
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
23 is prime. It has no factors other than itself and 1.Rate this question:
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- 3.
Select all the numbers that are prime numbers.
- A.
7
- B.
21
- C.
13
- D.
10
Correct Answer(s)
A. 7
C. 13Explanation
7 and 13 are prime.
21 = 7*3 and 10 = 2*5 are not prime.Rate this question:
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- 4.
A _____ number is a natural number that's not a prime number.
Correct Answer(s)
compositeExplanation
A composite number is a natural number that is not a prime number. This means that it can be divided evenly by more than just 1 and itself. In other words, it has multiple factors. For example, 4 is a composite number because it can be divided evenly by 1, 2, and 4. On the other hand, prime numbers can only be divided evenly by 1 and themselves. Therefore, composite numbers are the opposite of prime numbers.Rate this question:
- 5.
How many prime numbers are there between 1 and 20?
- A.
6
- B.
7
- C.
8
- D.
9
Correct Answer
C. 8Explanation
To find the number of prime numbers between 1 and 20, we list the prime numbers in that range. Prime numbers are numbers greater than 1 that have no divisors other than 1 and themselves. Here are the prime numbers between 1 and 20:
2, 3, 5, 7, 11, 13, 17, 19
Counting these numbers, there are 8 prime numbers between 1 and 20. Therefore, the correct answer is:
8Rate this question:
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- 6.
Which of the following numbers is NOT a prime number?
- A.
11
- B.
15
- C.
23
- D.
31
Correct Answer
B. 15Explanation
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. 15 is not a prime number because it is divisible by 1, 3, 5, and 15.Rate this question:
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- 7.
What is the only even prime number?
- A.
1
- B.
2
- C.
4
- D.
6
Correct Answer
B. 2Explanation
The only even prime number is 2. All other even numbers greater than 2 are divisible by 2, making them composite numbers.Rate this question:
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- 8.
Which of the following is a prime number?
- A.
27
- B.
29
- C.
30
- D.
33
Correct Answer
B. 29Explanation
29 is a prime number because it has only two positive divisors: 1 and 29. It is not divisible by any other number.Rate this question:
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- 9.
What is the smallest prime number?
- A.
0
- B.
1
- C.
2
- D.
3
Correct Answer
C. 2Explanation
The smallest prime number is 2. It is the only even prime number and the only prime number that is even. All other prime numbers are odd.Rate this question:
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- 10.
Which of the following statements about prime numbers is true?
- A.
Every prime number is odd.
- B.
Every prime number is even.
- C.
1 is a prime number.
- D.
Prime numbers are only divisible by 1 and themselves.
Correct Answer
D. Prime numbers are only divisible by 1 and themselves.Explanation
This statement correctly defines prime numbers. A prime number is a natural number greater than 1 that has exactly two distinct positive divisors: 1 and itself. This property distinguishes prime numbers from composite numbers.Rate this question:
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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May 15, 2024Quiz Edited by
ProProfs Editorial Team -
Nov 15, 2011Quiz Created by
Bryceg
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