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posted by Joshua Wednesday, November 30, 2011 at 11:45am.
The 7th term of an A.p is 20 and the 13th term is 38 find the ,1,70thterm ,2,11thterm
a+6d = 20 a+12d = 38 so, a=2 d=3 Can't make out which other terms you want, but knowing a and d should make it easy.
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