3. 30 is multiple of which number
A.45
B.90
C.50
D.100
other:
4.21,28,35,42 and 49 are multiples of what number
A.8
B.7
C.10
D.9
other:
5.what prime number is greater to 67
A.68
B.68
C.71
D.73
other:
6.what is the least three digit prime number
A.100
B.111
C.101
D.121
other:
what is the smallest composite number
A.2
b.3
c.4
d.5
other:
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