2+2+2^2+2^3+2^4+2^5+2^6+2^7+2^8 = 2^9
I spent too long (in my view) manually adding up the numbers. Is there a faster way?
I spent too long (in my view) manually adding up the numbers. Is there a faster way?
Check this
https://www.beatthegmat.com/gprep-2-2-2- ... 36087.html
