Question

19 29 59 79 what is the next series

Answer 1

Answer:

$99$

Step-by-step explanation:

$Alternate \\ \boxed{19 }+ 40 = 59 = > \boxed{59} + 40 = 99 \\ \boxed{29 }+ 50 = 79 = > \boxed{79} + 50 = 129$

Answer 2

Answer:

I think, the problem is wrong. instead of 59, the third term should be 49.