soal ulangan

What is the prime factorization of 12?

• 3 × 4

• 2 × 6

• 1 × 12

• 2^2 × 3

List the prime factors of 15.

• [3, 5]

• 2, 7

• 4, 5

• 1, 15

What are the prime factors of 18?

• 2, 3

• 2, 9

• 3, 6

• 1, 18

Find the prime factorization of 20.

• 4 × 5

• 1 × 20

• 2^2 × 5

• 2 × 10

What is the smallest prime number?

• 3

• 4

• 2

• 1

Is 21 a prime number? Why or why not?

• Yes, it has only two factors: 1 and 21.

• No, it is an even number.

• Yes, because it is greater than 1.

• No

What is the prime factorization of 30?

• 3 × 10

• 2 × 3 × 5

• 2 × 15

• 5 × 6

List the prime factors of 24.

• 1, 2, 3

• 4, 6

• [2, 3]

• 2, 12

What is the prime factorization of 36?

• 2^3 * 3

• 6 * 6

• 2^2 * 3^2

• 4 * 9

Is 25 a prime number? Explain your answer.

• Yes, 25 is a prime number.

• 25 is only divisible by 1 and itself.

• 25 is a prime number because it is odd.

• No, 25 is not a prime number.