The answer for the blank space in the table is 29. As you can see, there is a pattern. The number of children for the first one is 3. Double three and it is six, add one to six and you get seven.
Third one: the number of kids is 9. Double nine and it is eighteen. Add one to eighteen it is nineteen. And so on.
Hope I helped!! (Please give me brainliest answer!!)
❤️- Alishba