What number completes this series 完成这一数列

What number is missing from this series? what number is missing from this series?翻译 what would be the next number in this series"2...4...8...16. 一道英语的智力题求解What would be the next number in this series?0,5,1 which number should come next in this series? what number comes next in the following series? What number is this bus? What group of letters comes next in this series? What shape completes the bottom line? What number comes next in following series 9,12,21,48 奥英难题,1.What number comes next in the following series?9,12,2 What would be the next number in the following series?(在下面这组