Respuesta :

kayla2359

Answer:

They keep on adding by even numbers. From 1-3 there is 2 between the number from 3-7 it's 4 from 7-13 its 6 from 13-21 it's 8.

Step-by-step explanation:

The next number is the sequence would be 31 beucase 10 is the next even number and 21+10=31.

So, what you need to do is constantly add by even numbers.

Now, throughout 1 to 3 there is the number 2 between the number from 3 to 7 so it's 4 from 7 to 13 its 6 from 13 to 21.

So, your final answer is going to be 8!

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