Quiz: Factors, Primes, Composites, and Factor Trees

1. List all the factors of 29.
a. 29 does not have any factors
b. 1, 29
c. 29
2. How many factors does the number 123 have?
a. 4
b. 3
c. 2
3. What is the smallest prime number?
a. 1
b. 2
c. 3
4. Which of the following are the prime factors of 24?
a. 1, 2, 3, 4, 6, 8, 12, 24
b. 1, 2, 3
c. 2, 3
5. How many prime numbers are there between 30 and 40?
a. 2
b. 3
c. 4
6. The sum of two prime numbers, each greater than 10, is
a. always even.
b. always odd.
c. sometimes even and sometimes odd.
7. What is the smallest composite number with exactly three different factors?
a. 3
b. 4
c. 24
8. The product of two composite numbers, each greater than 10, is
a. always even.
b. always odd.
c. sometimes even and sometimes odd.
9. Which of the following is true about the numbers 0 and 1?
a. 0 is composite and 1 is prime.
b. 0 is composite and 1 is neither prime nor composite.
c. Neither number is prime or composite.
10. Which of the following is a true statement?
a. All whole numbers can be expressed as a product of prime factors.
b. All composite numbers can be expressed as a product of prime factors.
c. All odd numbers can be expressed as a product of prime factors.
11. Which of the following is a correct way to use a factor tree to express 48 as a product of prime factors?
a. line art
b. line art
c. Both A and B are correct ways.
12. Express 96 as a product of prime factors.
a. 25 × 3
b. 2 × 3 × 42
c. 24× 6

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