The first and the second sequence are arithmetic and geometric sequence, respectively
The first number in both sequences is 14
From the question, we have the following rules
Start = 7
Multiply by 2
Start = 8
Add = 2
So, the numbers in the sequence are:
Rule 1: 7, 14, 28, 56......
Rule 2: 8, 10, 12, 14, .....
By comparing the numbers in the sequence, we can see that the first number in both sequences is 14
Read more about sequence at:
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