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Mathematics 11 Online
OpenStudy (anonymous):

Find the next item in the sequence. 15, 30, 45, 60, ...

OpenStudy (anonymous):

What is 30-15? What is 45-30? What is 60-45?

OpenStudy (anonymous):

It's 75. You're counting by 15's

OpenStudy (anonymous):

ohhhhh I was getting confused

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