In a proper order, the first four factors of 80 are………..
a) 1, 2, 3, 4, 5
b) 1, 2, 4, 5, 8
c) 1, 3, 5, 10, 20
d) 1, 2, 3, 5, 10
The first five multiples of 8 are……….
a) 24, 32, 40, 48, 54
b) 2, 4, 8, 6, 10
c) 8, 16, 24, 32, 40
d) 1, 2, 3, 4, 5
What factors do 15 and 21 have in common?
a) 15 and 21
b) 1 and 3
c) 7
d) 1
A prime number is..........
a) a number that has only one factor.
b) a number that has at least two factors.
c) a number that has more than two factors.
d) a number that has only two factors.
(1 and itself)
Which number is NOT prime?
a) 3
b) 7
c) 17
d) 21
The composite numbers has………….
a) More than two factors
b) Infinite factors
c) One factor
d) Two factors
