Question

MEDALS GIVEN
Question 4 (Multiple Choice Worth 1 points)

[3.01]Which of the following is not true?

3 and 7 are the only prime factors of twenty-one.

The prime factorization of thirty-four is 2 times seventeen.

4 is the only prime factor of sixteen.

The prime factorization of eighteen is 2 times 3 squared.

Question 5 (Multiple Choice Worth 1 points)

[3.01]Which of the following helps you to determine that two hundred seventy-nine is divisible by 9?

seventy-nine is divisible by 9.

2 plus 7 plus 9 is divisible by 9.

The last digit is a 9.

9 is divisible by 9.