20
20
The answer is: 12.
The next number is 30. The numbers are increasing in multiples of 5.
10 ten
4
20
20
10
20
20
The answer is: 12.
10.
30
20? Just a guess
The next number is 30. The numbers are increasing in multiples of 5.
what number is next in the sequence: 10,20,30,20,(? 30