500
The sequence appears to involve multiplying the previous number by an increasing factor: (4 \times 5 = 20) and (20 \times 5 = 100). Following this pattern, the next number would be (100 \times 5 = 500), and then (500 \times 5 = 2500). Therefore, the next two numbers in the sequence are 500 and 2500.
10
20
10
20
500
next in the sequence: 10,20,30,20
The next number in the sequence will be 56.
20
10
20
25 is the next number that appears in that sequence.
10 is one possibility.
20
10
20
20