Posted by buffy on Thursday, October 3, 2013 at 9:46pm.
the arithmetic series 1 + 4 + 7 + ....tn has a sum of 1001. how many terms does the series have?

math  help()!!!!!, Friday, October 4, 2013 at 12:01am
apply arithmetic progression formula !If you don't know then search arithmetic progression on GOOGLE!