20 5 30 6 42 7 56 8...............
4*5=20
5*6=30
6*7=42
7*8=56
20 5 30 6 42 7 56 8 72 9 90.. :):)
Fifty-six
56
The number which best completes the sequence below is 20 5 30 6 42 7
If the sequence is 205, 306, 427 then a possible 4th number is 568. The initial difference between 205 and 306 is 101, which increases by 20 at each step. 306 → 427 = 121 : 427 → 568 = 141
54
next in the sequence: 10,20,30,20
13 20 12
A number sequence is not a question. So there can be no "answer".
20
10
The next number in the sequence will be 56.
320
20
500