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10 votes
10 votes
This one is super hard

User Jaapze
by
3.0k points

1 Answer

11 votes
11 votes

8, 17, 26...

The difference is d = 9

8 + 9 = 17

17 + 9 = 26

The general formula for an arithmetic progression is An = A1 + (n -1)d

An = 8 + (n -1)*9

User ZZB
by
3.4k points