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nincompoop Group TitleBest ResponseYou've already chosen the best response.1
you can't prove it
 one year ago

nincompoop Group TitleBest ResponseYou've already chosen the best response.1
it's not always the case
 one year ago

mukushla Group TitleBest ResponseYou've already chosen the best response.1
its true for n>3 u may use mathematical induction, for n=4\[32<3^4=81\]now suppose that the statement is true for some n=k>4 this means\[3k+20<3^k\]and prove that for \(n=k+1\)\[3(k+1)+20<3^{k+1}\]i think u can do it from here :) let me know if this is unclear
 one year ago
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