Free AMC 12 Number Theory & Mathematical Logic Questions and Answers

Question 1

What is the greatest common divisor (GCD) of 48 and 180?

Accepted Answer

6

Answer

12

Answer

24

Answer

18

Question 2

What is the least common multiple (LCM) of 8 and 12?

Accepted Answer

24

Answer

48

Answer

36

Answer

60

Question 3

What is the remainder when 325 is divided by 6?

Accepted Answer

5

Answer

2

Answer

3

Answer

1

Question 4

What is the number of prime numbers between 1 and 20?

Accepted Answer

8

Answer

6

Answer

7

Answer

9

Question 5

What is the sum of all odd integers between 1 and 20?

Accepted Answer

100

Answer

90

Answer

110

Answer

105

Question 6

What is the value of 2⁴ + 3³?

Accepted Answer

16 + 27 = 43

Answer

16 + 27 = 44

Answer

16 + 27 = 40

Answer

16 + 27 = 45

Question 7

Which of the following is a perfect square?

Accepted Answer

49

Answer

50

Answer

51

Answer

52

Question 8

What is the next prime number after 29?

Accepted Answer

31

Answer

33

Answer

35

Answer

37

Question 9

What is the value of (5 × 6) ÷ 2?

Accepted Answer

15

Answer

18

Answer

12

Answer

10