UTMA Number Theory and Arithmetic

Question 1

What is the greatest common divisor (GCD) of 84 and 126?

Accepted Answer

42

Answer

21

Answer

14

Answer

63

Question 2

Which of the following is a prime number?

Accepted Answer

97

Answer

91

Answer

87

Answer

93

Question 3

What is the least common multiple (LCM) of 12, 18, and 24?

Accepted Answer

72

Answer

36

Answer

48

Answer

144

Question 4

If a number leaves a remainder of 3 when divided by 7, what is the remainder when twice that number is divided by 7?

Accepted Answer

6

Answer

1

Answer

3

Answer

5

Question 5

How many positive divisors does 360 have?

Accepted Answer

24

Answer

18

Answer

20

Answer

30

Question 6

What is 2⁰ + 2¹ + 2² + 2³ + 2⁴?

Accepted Answer

31

Answer

28

Answer

30

Answer

32