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OpenStudy (anonymous):
t_1=15, t_2=21 t_20=?
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OpenStudy (apoorvk):
@jordan199 there?
OpenStudy (apoorvk):
so, t1= first term = a = 15. okay cool we got the first term now i need the common difference right? Okay if you remember, common difference was basically the difference between two consecutive terms - right?
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