3.which is a prime number?
a.47 b.53 c.57 d.61

4.which is a prime number?
a.6 b.7 c.8 d.9

5.what is rhe greatesr common factor (GCF) of 14 and 28?
a.7 b.9 c.145 d.28

6.what is the least common multiple (LCM) of 9 and 15
a.3 b.6 c.15 d.45​