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Mathematics 19 Online
OpenStudy (anonymous):

The numbers in the list 0, 1, 3, 7, x, 31 follow a pattern. Which is x? 9 12 14 15

OpenStudy (anonymous):

what is 1-0? what is 3-1? what is 7-3?

OpenStudy (anonymous):

Indeed. 1 2 4 See the pattern? Think doubles.

OpenStudy (anonymous):

i got 14 am i right?...

OpenStudy (anonymous):

no. what is the double of 4?

OpenStudy (anonymous):

so its 15?

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

whats the double of 8? it is 16 15 + 16 = 31 so that is the correct answer

OpenStudy (anonymous):

thanks (:

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