Continue the pattern 31, 5, 32, 10, 33, 15, blank blank blank

34, 20, 35

Step-by-step explanation:

31, 5, 32, 10, 33, 15,

This is really two sequences

Look at terms 1,3,5

31, 32,33

We are adding 1 each time

Then look at terms 2,4,6

5,10,15

We add 5 each time

It goes add 1 to the odd term, then add 5 to the even term, then add 1 to the odd term, ...

Add 1 to the odd term

33 + 1 = 34

Add 5 to the even term

Then 15 + 5 = 20

Then add 1 to the odd term

34 + 1 = 35

34, 20, 35, ...

Step-by-step explanation:

From what I see, it is alternating between two patterns: + 5 starting at 5, and + 1 starting at 31.