1. Which of the following are co-primes?
A. (2,6)
B. (6,12)
C. (4,5)
D. (4,8)
2. Which of the following is not a factor of 24?
A. 1
B. 2
C. 7
D. 4
3. The smallest prime number is
B. 3
C. 2
D. 5
4. The number of factors for 12 are
A. 3
B. 6
C. 8
D. 12
5. State whether the following is true or false
1 is a prime number.
A. True
B. False