Look at this series: 31, 29, 24, 22, 17, ... What number should come next? Choose the most appropriate option
A) 15  B) 14  C) 13  D) 12  E) 11
Explanation: This is a simple alternating subtraction series, which subtracts 2, then 5.   15nswer: Option 15
<result>A</result>
Look at this series: 31, 29, 24, 22, 17, ... What number should come next?