The GCF is 14.
7
SEVEN.
4
The GCF is 2.
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF is 7.
The GCF is 7.
The GCF of 28 and 42 is 14.
2 x 2 x 7 = 28 2 x 2 x 3 x 5 = 60
30 days has September,April, June and NovemberAll the rest have 31And February's great with 28And Leap Year's February's fine with 29