next in the sequence: 10,20,30,20
The next number in the sequence will be 56.
20
10
25 is the next number that appears in that sequence.
500
18
10 is one possibility.
The pattern appears to be: subtract 6, add 17, subtract 14, add 9, subtract 7. Following this pattern, the next number should be obtained by adding 3 to the last number in the sequence, which is 6. Therefore, the next number in the sequence is 9.
170
20
80