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Mathematics 7 Online
OpenStudy (anonymous):

Thanks everyone! Got another one: 3 9 4 5 25 20 21 441 What should the next number be? 436, 442, 430, 439, or 454

OpenStudy (nice):

The pattern is square the number, subtract 5, add one, repeat. So the answer would be 436.

OpenStudy (anonymous):

436 the pattern is x,X^2,(-5),(-1).....and repeats

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