The next is 3.
If the last number is 1/3 (it should be), the next number is 5 and 1/3
10
96 because you are multiplying by 2, so 6 x 2 is 12, 12 x 2 is 24, 24 x 2 is 48, 48 x 2 is 96, etc.
81
The next is 3.
1.5
612
8 and then 1.6
25
96 (each number is twice the previous)
A single number, such as 4642142824816 does not constitute a sequence.
16
21
If the last number is 1/3 (it should be), the next number is 5 and 1/3
Think it's 30...then 20
10