What's the next two number?40,24,26,12

What's the next two number?40,24,26,12 what's the next number? 796,432,579,643,( ) What's the next number? What's the number next?50400,7200,900,100 what is the next number what's the number Eight ,six,seven,five,six,four...What's the next number? What 's the next number?1 2 4 7 11 16 What’s the number of What number comes next 奥英难题,1.What number comes next in the following series?9,12,2 1.单项选择What number come next in the following series（系列）?9,12