Answers

2016-06-27T18:58:43+08:00
The common difference is 5/2 3+5/2= 3 5/2 or 5 1/2 5 1/2 + 5/2= 8 8+ 5/2= 10 1/2 10 1/2+ 5/2= 13 13+5/2= 15 1/2 15 1/2 + 5/2= 18 18 +5/2= 20 1/2 20 1/2 +5/2 = 23
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