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For 2(1+g)^5=3, I would deduce using algebra, i.e. g = 1-(3/2)^(1/5)
So my keypresses would be [1.5] [Yx] [.2] [=] [1] [-] [Ans] [=] yielding 1.08.
For the 20 year bond: yes, these questions crop up all the time, and there is a fast way to calculate it. There is already a great example in the BA II Plus guide book that you can get from 300 Hours. I’ll share a screenshot here (@christine let me know if this isn’t cool), but I’d recommend getting it as it probably can help you a lot more: http://www.300hours.com/ba-ii-plus-guide/#.WLfa_RKLTOQ
