Friday, 12 August 2016

summation - An inequality involving sums and products




I am curious to know whether the following holds or not.



If n1,n2,n3,m1,m2 are positive integers strictly greater than 1 such that n1+n2+n3>m1+m2
then n1n2n3m1m2.



Please do not give me the full answer (I only want a hint). I have tried using the AM-GM-HM inequality but can't seem to prove the result. I have tried looking for counterexamples but haven't found one yet.



Thanks in advance for any help!!


Answer




2+3+100>49+50
but
2×3×100<49×50


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