Question 1: The least common multiple of 4 and 10 is: a) 5
b) 20
c) 10
d) 12
Question 2: The LCM of 3, 8 and 12 is:
a) 24
b) 12
c) 36
d) 100
Question 3: Which of the following is NOT true about prime numbers?
a) They have exactly two factors
b) 1 is a factor of every prime number
c) No prime number have its ones digit zero.
d) All prime numbers are odd numbers.