Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next ?

10 is the next number. thanks..................

This question has two series:

1. 7, 8, 9....

2. 10, 11, 12,...

So the best answer is 7,10, 8, 11, 9, 12, 10, 13

I think the next number will be (10) 

the next number is ten (10).

Answer is 10

The right number is 178.The rule is previous no.divided by 2.

the right number is 10.the rules is  +3 -2 (repeat)

1st number :- 7 

2nd number :- 10 ( 1st number + 3 )

3rd number :- 8 ( 2nd number - 2 )

4th number :- 11 ( 3rd number + 3 )

5th number :- 9 ( 4th number - 2 )

6th number :- 12 ( 5th number + 3 )

7th number :- 10 ( 6th number - 2 )

hence the next number should be 10

the next number is 10 then 13,11,14....... and so on

The pattern is add 3 and subtract 2. The answer is 10.