In this AoPS thread you can find multiple extremely fast ways to calculate . http://www.artofproblemsolving.com/Forum/viewtopic.php?f=224&t=572612
I've used this thread multiple times to prepare for AIME, so I would recommend you guys check it out.
You can post your favorite way to calculate in the comments below if you want.
Have fun! ^_^
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2^{34}
a_{i-1}
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36 ..........
27 + 10 -1
37-1
36
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Yes, me too!
9∗4=36 ....Definitely my favorite :D
9 * 3^3 =36
3^2+3^3=36
First i add 3 to 27 that makes 30 then i add remaining 6 to it
7*2=14+2+20 really fast in my mind