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Mathematics 18 Online
OpenStudy (anonymous):

1 2 3 4 5 8 __________??? a) 7 b) 9 c) 11 d) 15

OpenStudy (tester97):

9?

OpenStudy (anonymous):

add three for every 4 numbers so its 15

OpenStudy (tester97):

ok

OpenStudy (anonymous):

how?

OpenStudy (anonymous):

ok got it thanx..

OpenStudy (tkhunny):

"1 2 3 4 5 8 __________???" There is not now, nor can there ever be, a single, definitive answer to this question. A few (finite number) numbers does not a unique pattern make. There are infinitely many answers to this question. Any choice given is just fine.

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