Look at this series: 70, 71, 76, __, 81, 86, 70, 91, ... What number should fill the blank? Answers:
A) 70	B) 71	C) 80	D) 96	E) None
Explanation: In this series, 5 is added to the previous number; the number 70 is inserted as every third number.   70nswer: Option 70
<result>A</result>
Look at this series: 70, 71, 76, __, 81, 86, 70, 91, ... What number should fill the blank?