Question 1

Which of the following is not a prime number?

Accepted Answer

21

Answer

11

Answer

7

Answer

17

Question 2

Which of the following is correct about the prime numbers greater than 20 and less than or equal to 30?

Accepted Answer

23, 29

Answer

25, 29

Answer

21, 29

Answer

21, 23

Question 3

Which of the following is the prime factoring of 126?

Accepted Answer

$2	imes3^2	imes7$

Answer

$2	imes9	imes7$

Answer

$18	imes7$

Answer

$2	imes63$

Question 4

Which of the factoring formula do you use to factor $x^2 - 16$?

Accepted Answer

4

Answer

1

Answer

3

Answer

2

Question 5

Which of the factoring formula is used to factor $x^2+4x+3$

Accepted Answer

1

Answer

4

Answer

2

Answer

3

Question 6

Which of the factoring formula is used to factor $x^2+4x+4$?

Accepted Answer

2

Answer

1

Answer

4

Answer

3

Question 7

Which of the factoring formula is used to factor $x^2-8x+16$?

Accepted Answer

3

Answer

1

Answer

4

Answer

2

Question 8

Suppose you want to find the smallest natural number $x$ that when multiplied by 18,  equals the square of another natural number y. What are the values of x and y?

Accepted Answer

x=2, y=6

Answer

x=3, y=5

Answer

x=4, y=16

Answer

x=6, y=8

Question 9

Factor $7x^2-7x$.

Accepted Answer

$7x(x-1)$

Answer

$7x(x+7x)$

Answer

$x(7x-7)$

Answer

$7(x^2-x)$

Question 10