Question

Determinati n ∈ IN stelat asfel incat $\frac{n+1}{3}$> $\frac{5}{6}$ si n < 7.
URGENT

Answer 1

Prima inegalitatea mai inseamna 6n + 6 > 15 <=> 6n > 9 <=> n >=2 ; dar n <=6  si n ∈ N din datele problemei => n ∈ { 2 ,  3 , 4 , 5 , 6 }
Bafta !