Choose all the statements that are true about this sequence. 60, 66, 72, 78 
 1: The value of the first term is 1.
 2: This is an arithmetic sequence. 
 3:The value of the third term is 72.
 4: The sequence starts at 60 and adds 4 repeatedly. 
 5:The sequence starts at 66 and adds 6 repeatedly.
 6: There are four terms in this sequence. 
 7:The sequence starts at 60 and adds 6 repeatedly.