Pattern Recognition -20

Find the next two numbers in the series.

8179 , 7186 , 6157 ,5164 ,4135 , _, _


Answer

8179 , 7186 , 6157 ,5164 ,4135 , _, _

8179 ----> 7=8-1       9=8+1     - , +

7186----->8=7+1      6=7-1       +, -

6157-------->5=6-1            7= 6+1              -, +

5164 ------> 6= 5 + 1         4=5-1               +, -

4135 --->3=4-1        5=4+1       -, +


Next two numbers

31 ------>   +, -   3+1 =4     3-1=2          3142
21------->    -, +  2-1=1       2+1=3         2113

8179 , 7186 , 6157 ,5164 ,4135 , 3142, 2113,........